131113312 has 24 divisors (see below), whose sum is σ = 281596392. Its totient is φ = 59596800.

The previous prime is 131113303. The next prime is 131113349. The reversal of 131113312 is 213311131.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 185889 + ... + 186592.

It is an arithmetic number, because the mean of its divisors is an integer number (11733183).

Almost surely, 2^131113312 is an apocalyptic number.

It is an amenable number.

131113312 is an abundant number, since it is smaller than the sum of its proper divisors (150483080).

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

131113312 is a wasteful number, since it uses less digits than its factorization.

131113312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372502 (or 372494 counting only the distinct ones).

The product of its digits is 54, while the sum is 16.

The square root of 131113312 is about 11450.4721300041. The cubic root of 131113312 is about 508.0216991165.

Adding to 131113312 its reverse (213311131), we get a palindrome (344424443).

The spelling of 131113312 in words is "one hundred thirty-one million, one hundred thirteen thousand, three hundred twelve".