131711312 has 20 divisors (see below), whose sum is σ = 263423616. Its totient is φ = 63731040.

The previous prime is 131711303. The next prime is 131711323. The reversal of 131711312 is 213117131.

131711312 is an admirable number.

It is a super-2 number, since 2×131711312² = 34695739417522688, which contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 132278 + ... + 133269.

Almost surely, 2^131711312 is an apocalyptic number.

It is an amenable number.

131711312 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

131711312 is a wasteful number, since it uses less digits than its factorization.

131711312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265586 (or 265580 counting only the distinct ones).

The product of its digits is 126, while the sum is 20.

The square root of 131711312 is about 11476.5548837619. The cubic root of 131711312 is about 508.7928800937.

Adding to 131711312 its reverse (213117131), we get a palindrome (344828443).

The spelling of 131711312 in words is "one hundred thirty-one million, seven hundred eleven thousand, three hundred twelve".