131531037 has 32 divisors (see below), whose sum is σ = 199342080. Its totient is φ = 76413120.

The previous prime is 131531027. The next prime is 131531077. The reversal of 131531037 is 730135131.

It is not a de Polignac number, because 131531037 - 2¹⁶ = 131465501 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 131530998 and 131531016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131531027) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 159408 + ... + 160230.

It is an arithmetic number, because the mean of its divisors is an integer number (6229440).

Almost surely, 2^131531037 is an apocalyptic number.

It is an amenable number.

131531037 is a deficient number, since it is larger than the sum of its proper divisors (67811043).

131531037 is a wasteful number, since it uses less digits than its factorization.

131531037 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1033.

The product of its (nonzero) digits is 945, while the sum is 24.

The square root of 131531037 is about 11468.6981388473. The cubic root of 131531037 is about 508.5606436106.

Adding to 131531037 its reverse (730135131), we get a palindrome (861666168).

The spelling of 131531037 in words is "one hundred thirty-one million, five hundred thirty-one thousand, thirty-seven".