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131264430 = 23511236161
BaseRepresentation
bin1111101001011…
…10111110101110
3100010222220221120
413310232332232
5232100430210
621005241410
73152505063
oct764567656
9303886846
10131264430
1168105a00
1237b63266
132126c17b
141360cc6a
15b7cd270
hex7d2efae

131264430 has 48 divisors (see below), whose sum is σ = 346287312. Its totient is φ = 31820800.

The previous prime is 131264363. The next prime is 131264461. The reversal of 131264430 is 34462131.

It is a self number, because there is not a number n which added to its sum of digits gives 131264430.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14451 + ... + 21710.

It is an arithmetic number, because the mean of its divisors is an integer number (7214319).

Almost surely, 2131264430 is an apocalyptic number.

131264430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131264430 is an abundant number, since it is smaller than the sum of its proper divisors (215022882).

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

131264430 is a wasteful number, since it uses less digits than its factorization.

131264430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36193 (or 36182 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 131264430 is about 11457.0689969119. The cubic root of 131264430 is about 508.2168019782.

The spelling of 131264430 in words is "one hundred thirty-one million, two hundred sixty-four thousand, four hundred thirty".

Divisors: 1 2 3 5 6 10 11 15 22 30 33 55 66 110 121 165 242 330 363 605 726 1210 1815 3630 36161 72322 108483 180805 216966 361610 397771 542415 795542 1084830 1193313 1988855 2386626 3977710 4375481 5966565 8750962 11933130 13126443 21877405 26252886 43754810 65632215 131264430