131651956 has 12 divisors (see below), whose sum is σ = 230493060. Its totient is φ = 65796800.

The previous prime is 131651953. The next prime is 131651981. The reversal of 131651956 is 659156131.

It can be written as a sum of positive squares in 2 ways, for example, as 76387600 + 55264356 = 8740^2 + 7434^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131651953) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5256 + ... + 17056.

It is an arithmetic number, because the mean of its divisors is an integer number (19207755).

Almost surely, 2^131651956 is an apocalyptic number.

It is an amenable number.

131651956 is a deficient number, since it is larger than the sum of its proper divisors (98841104).

131651956 is a wasteful number, since it uses less digits than its factorization.

131651956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14594 (or 14592 counting only the distinct ones).

The product of its digits is 24300, while the sum is 37.

The square root of 131651956 is about 11473.9686246739. The cubic root of 131651956 is about 508.7164390565.

The spelling of 131651956 in words is "one hundred thirty-one million, six hundred fifty-one thousand, nine hundred fifty-six".