131864929 has 12 divisors (see below), whose sum is σ = 157541844. Its totient is φ = 109970784.

The previous prime is 131864927. The next prime is 131865031. The reversal of 131864929 is 929468131.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 119858704 + 12006225 = 10948^2 + 3465^2 .

It is not a de Polignac number, because 131864929 - 2¹ = 131864927 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131864923) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34554 + ... + 38179.

It is an arithmetic number, because the mean of its divisors is an integer number (13128487).

Almost surely, 2^131864929 is an apocalyptic number.

It is an amenable number.

131864929 is a deficient number, since it is larger than the sum of its proper divisors (25676915).

131864929 is an equidigital number, since it uses as much as digits as its factorization.

131864929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72784 (or 72777 counting only the distinct ones).

The product of its digits is 93312, while the sum is 43.

The square root of 131864929 is about 11483.2455777972. The cubic root of 131864929 is about 508.9906076546.

The spelling of 131864929 in words is "one hundred thirty-one million, eight hundred sixty-four thousand, nine hundred twenty-nine".