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1231330014 = 232191358153
BaseRepresentation
bin100100101100100…
…1001101011011110
310011210222001020100
41021121021223132
510010210030024
6322103401530
742341063265
oct11131115336
93153861210
101231330014
11582065512
122a44532a6
13168143955
14b97675dc
15731787c9
hex49649ade

1231330014 has 24 divisors (see below), whose sum is σ = 2681857152. Its totient is φ = 408293280.

The previous prime is 1231330007. The next prime is 1231330019. The reversal of 1231330014 is 4100331321.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231330019) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 175639 + ... + 182514.

It is an arithmetic number, because the mean of its divisors is an integer number (111744048).

Almost surely, 21231330014 is an apocalyptic number.

1231330014 is an abundant number, since it is smaller than the sum of its proper divisors (1450527138).

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

1231330014 is a wasteful number, since it uses less digits than its factorization.

1231330014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358352 (or 358349 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 1231330014 is about 35090.3122528142. The cubic root of 1231330014 is about 1071.8273180817.

Adding to 1231330014 its reverse (4100331321), we get a palindrome (5331661335).

The spelling of 1231330014 in words is "one billion, two hundred thirty-one million, three hundred thirty thousand, fourteen".

Divisors: 1 2 3 6 9 18 191 382 573 1146 1719 3438 358153 716306 1074459 2148918 3223377 6446754 68407223 136814446 205221669 410443338 615665007 1231330014