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1331132530 = 2572131012069
BaseRepresentation
bin100111101010111…
…0111100001110010
310102202202112112211
41033111313201302
510211232220110
6340030442334
744662303600
oct11725674162
93382675484
101331132530
11623431632
123119633aa
13182a185b0
14c8b06870
157bcde98a
hex4f577872

1331132530 has 96 divisors (see below), whose sum is σ = 3032814960. Its totient is φ = 416908800.

The previous prime is 1331132501. The next prime is 1331132629. The reversal of 1331132530 is 352311331.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 453136369 + 877996161 = 21287^2 + 29631^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 642336 + ... + 644404.

Almost surely, 21331132530 is an apocalyptic number.

1331132530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1331132530 is an abundant number, since it is smaller than the sum of its proper divisors (1701682430).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1331132530 is a wasteful number, since it uses less digits than its factorization.

1331132530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2204 (or 2197 counting only the distinct ones).

The product of its (nonzero) digits is 810, while the sum is 22.

The square root of 1331132530 is about 36484.6889804477. The cubic root of 1331132530 is about 1100.0365084302.

Adding to 1331132530 its reverse (352311331), we get a palindrome (1683443861).

The spelling of 1331132530 in words is "one billion, three hundred thirty-one million, one hundred thirty-two thousand, five hundred thirty".

Divisors: 1 2 5 7 10 13 14 26 35 49 65 70 91 98 101 130 182 202 245 455 490 505 637 707 910 1010 1274 1313 1414 2069 2626 3185 3535 4138 4949 6370 6565 7070 9191 9898 10345 13130 14483 18382 20690 24745 26897 28966 45955 49490 53794 64337 72415 91910 101381 128674 134485 144830 188279 202762 208969 268970 321685 376558 417938 506905 643370 941395 1013810 1044845 1317953 1462783 1882790 2089690 2635906 2716597 2925566 5433194 6589765 7313915 10239481 13179530 13582985 14627830 19016179 20478962 27165970 38032358 51197405 95080895 102394810 133113253 190161790 266226506 665566265 1331132530