131113320 has 64 divisors (see below), whose sum is σ = 423601920. Its totient is φ = 32273664.

The previous prime is 131113303. The next prime is 131113349. The reversal of 131113320 is 23311131.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 131113320.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40464 + ... + 43583.

It is an arithmetic number, because the mean of its divisors is an integer number (6618780).

Almost surely, 2^131113320 is an apocalyptic number.

131113320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131113320 is an abundant number, since it is smaller than the sum of its proper divisors (292488600).

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

131113320 is a wasteful number, since it uses less digits than its factorization.

131113320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84074 (or 84070 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 15.

The square root of 131113320 is about 11450.4724793346. The cubic root of 131113320 is about 508.0217094490.

Adding to 131113320 its reverse (23311131), we get a palindrome (154424451).

The spelling of 131113320 in words is "one hundred thirty-one million, one hundred thirteen thousand, three hundred twenty".