131233957 has 2 divisors, whose sum is σ = 131233958. Its totient is φ = 131233956.

The previous prime is 131233951. The next prime is 131233981. The reversal of 131233957 is 759332131.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 91278916 + 39955041 = 9554^2 + 6321^2 .

It is a cyclic number.

It is not a de Polignac number, because 131233957 - 2¹¹ = 131231909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131233951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65616978 + 65616979.

It is an arithmetic number, because the mean of its divisors is an integer number (65616979).

Almost surely, 2^131233957 is an apocalyptic number.

It is an amenable number.

131233957 is a deficient number, since it is larger than the sum of its proper divisors (1).

131233957 is an equidigital number, since it uses as much as digits as its factorization.

131233957 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17010, while the sum is 34.

The square root of 131233957 is about 11455.7390420697. The cubic root of 131233957 is about 508.1774714726.

The spelling of 131233957 in words is "one hundred thirty-one million, two hundred thirty-three thousand, nine hundred fifty-seven".