131957894 has 4 divisors (see below), whose sum is σ = 197936844. Its totient is φ = 65978946.

The previous prime is 131957879. The next prime is 131957899. The reversal of 131957894 is 498759131.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131957899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32989472 + ... + 32989475.

It is an arithmetic number, because the mean of its divisors is an integer number (49484211).

Almost surely, 2^131957894 is an apocalyptic number.

131957894 is a deficient number, since it is larger than the sum of its proper divisors (65978950).

131957894 is an equidigital number, since it uses as much as digits as its factorization.

131957894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65978949.

The product of its digits is 272160, while the sum is 47.

The square root of 131957894 is about 11487.2927184781. The cubic root of 131957894 is about 509.1101926388.

The spelling of 131957894 in words is "one hundred thirty-one million, nine hundred fifty-seven thousand, eight hundred ninety-four".