131181974 has 16 divisors (see below), whose sum is σ = 245327616. Its totient is φ = 51109800.

The previous prime is 131181929. The next prime is 131181989. The reversal of 131181974 is 479181131.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 425762 + ... + 426069.

It is an arithmetic number, because the mean of its divisors is an integer number (15332976).

Almost surely, 2^131181974 is an apocalyptic number.

131181974 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

131181974 is a deficient number, since it is larger than the sum of its proper divisors (114145642).

131181974 is a wasteful number, since it uses less digits than its factorization.

131181974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 851851.

The product of its digits is 6048, while the sum is 35.

The square root of 131181974 is about 11453.4699545596. The cubic root of 131181974 is about 508.1103646586.

The spelling of 131181974 in words is "one hundred thirty-one million, one hundred eighty-one thousand, nine hundred seventy-four".