131031136 has 24 divisors (see below), whose sum is σ = 259560504. Its totient is φ = 65111040.

The previous prime is 131031133. The next prime is 131031137. The reversal of 131031136 is 631130131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131031133) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 7345 + ... + 17776.

It is an arithmetic number, because the mean of its divisors is an integer number (10815021).

Almost surely, 2^131031136 is an apocalyptic number.

131031136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

131031136 is a deficient number, since it is larger than the sum of its proper divisors (128529368).

131031136 is a wasteful number, since it uses less digits than its factorization.

131031136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25294 (or 25286 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 19.

The square root of 131031136 is about 11446.8832439228. The cubic root of 131031136 is about 507.9155417902.

Adding to 131031136 its reverse (631130131), we get a palindrome (762161267).

The spelling of 131031136 in words is "one hundred thirty-one million, thirty-one thousand, one hundred thirty-six".