131213776 has 40 divisors (see below), whose sum is σ = 262483200. Its totient is φ = 63502080.

The previous prime is 131213773. The next prime is 131213783. The reversal of 131213776 is 677312131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131213773) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 90465 + ... + 91903.

It is an arithmetic number, because the mean of its divisors is an integer number (6562080).

Almost surely, 2^131213776 is an apocalyptic number.

131213776 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

131213776 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

131213776 is a wasteful number, since it uses less digits than its factorization.

131213776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1627 (or 1621 counting only the distinct ones).

The product of its digits is 5292, while the sum is 31.

The square root of 131213776 is about 11454.8581833212. The cubic root of 131213776 is about 508.1514211639.

The spelling of 131213776 in words is "one hundred thirty-one million, two hundred thirteen thousand, seven hundred seventy-six".