131011232 has 72 divisors (see below), whose sum is σ = 297253152. Its totient is φ = 56361600.

The previous prime is 131011229. The next prime is 131011247. The reversal of 131011232 is 232110131.

It is a congruent number.

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, 126557 + ... + 127587.

It is an arithmetic number, because the mean of its divisors is an integer number (4128516).

Almost surely, 2^131011232 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131011232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (148626576).

131011232 is an abundant number, since it is smaller than the sum of its proper divisors (166241920).

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

131011232 is a wasteful number, since it uses less digits than its factorization.

131011232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1090 (or 1063 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 131011232 is about 11446.0138039407. The cubic root of 131011232 is about 507.8898225523.

Adding to 131011232 its reverse (232110131), we get a palindrome (363121363).

The spelling of 131011232 in words is "one hundred thirty-one million, eleven thousand, two hundred thirty-two".