131302232 has 8 divisors (see below), whose sum is σ = 246191700. Its totient is φ = 65651112.

The previous prime is 131302229. The next prime is 131302261. The reversal of 131302232 is 232203131.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×131302232² = 34480552256363648, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 131302232.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8206382 + ... + 8206397.

Almost surely, 2^131302232 is an apocalyptic number.

It is an amenable number.

131302232 is a deficient number, since it is larger than the sum of its proper divisors (114889468).

131302232 is a wasteful number, since it uses less digits than its factorization.

131302232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16412785 (or 16412781 counting only the distinct ones).

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

The square root of 131302232 is about 11458.7186020078. The cubic root of 131302232 is about 508.2655833265.

Adding to 131302232 its reverse (232203131), we get a palindrome (363505363).

The spelling of 131302232 in words is "one hundred thirty-one million, three hundred two thousand, two hundred thirty-two".