131197790 has 32 divisors (see below), whose sum is σ = 243979776. Its totient is φ = 50768640.

The previous prime is 131197783. The next prime is 131197811. The reversal of 131197790 is 97791131.

It is a congruent number.

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, 36995 + ... + 40385.

It is an arithmetic number, because the mean of its divisors is an integer number (7624368).

Almost surely, 2^131197790 is an apocalyptic number.

131197790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131197790 is a deficient number, since it is larger than the sum of its proper divisors (112781986).

131197790 is a wasteful number, since it uses less digits than its factorization.

131197790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3524.

The product of its (nonzero) digits is 11907, while the sum is 38.

The square root of 131197790 is about 11454.1603795302. The cubic root of 131197790 is about 508.1307840052.

The spelling of 131197790 in words is "one hundred thirty-one million, one hundred ninety-seven thousand, seven hundred ninety".