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131120464 = 2421138839
BaseRepresentation
bin1111101000010…
…11110101010000
3100010201121110111
413310023311100
5232031323324
621002211104
73151335256
oct764136520
9303647414
10131120464
1168017822
1237ab3a94
132121b797
14135b25d6
15b7a0794
hex7d0bd50

131120464 has 20 divisors (see below), whose sum is σ = 255256480. Its totient is φ = 65247840.

The previous prime is 131120461. The next prime is 131120497. The reversal of 131120464 is 464021131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131120461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16044 + ... + 22795.

It is an arithmetic number, because the mean of its divisors is an integer number (12762824).

Almost surely, 2131120464 is an apocalyptic number.

It is an amenable number.

131120464 is a deficient number, since it is larger than the sum of its proper divisors (124136016).

131120464 is a wasteful number, since it uses less digits than its factorization.

131120464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39058 (or 39052 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 131120464 is about 11450.7844272783. The cubic root of 131120464 is about 508.0309361779.

Adding to 131120464 its reverse (464021131), we get a palindrome (595141595).

The spelling of 131120464 in words is "one hundred thirty-one million, one hundred twenty thousand, four hundred sixty-four".

Divisors: 1 2 4 8 16 211 422 844 1688 3376 38839 77678 155356 310712 621424 8195029 16390058 32780116 65560232 131120464