131131232 has 24 divisors (see below), whose sum is σ = 259667856. Its totient is φ = 65183872.

The previous prime is 131131199. The next prime is 131131279. The reversal of 131131232 is 232131131.

It is a self number, because there is not a number n which added to its sum of digits gives 131131232.

It is a congruent number.

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, 6308 + ... + 17379.

It is an arithmetic number, because the mean of its divisors is an integer number (10819494).

Almost surely, 2^131131232 is an apocalyptic number.

It is an amenable number.

131131232 is a deficient number, since it is larger than the sum of its proper divisors (128536624).

131131232 is a wasteful number, since it uses less digits than its factorization.

131131232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23870 (or 23862 counting only the distinct ones).

The product of its digits is 108, while the sum is 17.

The square root of 131131232 is about 11451.2546037541. The cubic root of 131131232 is about 508.0448427978.

Adding to 131131232 its reverse (232131131), we get a palindrome (363262363).

The spelling of 131131232 in words is "one hundred thirty-one million, one hundred thirty-one thousand, two hundred thirty-two".