131320232 has 16 divisors (see below), whose sum is σ = 246534900. Its totient is φ = 65577600.

The previous prime is 131320219. The next prime is 131320261. The reversal of 131320232 is 232023131.

It can be written as a sum of positive squares in 2 ways, for example, as 115906756 + 15413476 = 10766^2 + 3926^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 131320232.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3269 + ... + 16532.

Almost surely, 2^131320232 is an apocalyptic number.

It is an amenable number.

131320232 is a deficient number, since it is larger than the sum of its proper divisors (115214668).

131320232 is a wasteful number, since it uses less digits than its factorization.

131320232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20636 (or 20632 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 131320232 is about 11459.5040032281. The cubic root of 131320232 is about 508.2888080204.

Adding to 131320232 its reverse (232023131), we get a palindrome (363343363).

The spelling of 131320232 in words is "one hundred thirty-one million, three hundred twenty thousand, two hundred thirty-two".