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131040324 = 22324777447
BaseRepresentation
bin1111100111110…
…00010001000100
3100010120112112100
413303320101010
5232021242244
621000352100
73150552522
oct763702104
9303515470
10131040324
1167a72598
1237a75630
13211c116c
1413591312
15b786b69
hex7cf8444

131040324 has 36 divisors (see below), whose sum is σ = 338292864. Its totient is φ = 42750192.

The previous prime is 131040319. The next prime is 131040331. The reversal of 131040324 is 423040131.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a junction number, because it is equal to n+sod(n) for n = 131040297 and 131040306.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37032 + ... + 40415.

It is an arithmetic number, because the mean of its divisors is an integer number (9397024).

Almost surely, 2131040324 is an apocalyptic number.

It is an amenable number.

131040324 is an abundant number, since it is smaller than the sum of its proper divisors (207252540).

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

131040324 is a wasteful number, since it uses less digits than its factorization.

131040324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77504 (or 77499 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 131040324 is about 11447.2845688399. The cubic root of 131040324 is about 507.9274133170.

Adding to 131040324 its reverse (423040131), we get a palindrome (554080455).

The spelling of 131040324 in words is "one hundred thirty-one million, forty thousand, three hundred twenty-four".

Divisors: 1 2 3 4 6 9 12 18 36 47 94 141 188 282 423 564 846 1692 77447 154894 232341 309788 464682 697023 929364 1394046 2788092 3640009 7280018 10920027 14560036 21840054 32760081 43680108 65520162 131040324