131926961 has 4 divisors (see below), whose sum is σ = 131973924. Its totient is φ = 131880000.

The previous prime is 131926933. The next prime is 131926969. The reversal of 131926961 is 169629131.

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

It can be written as a sum of positive squares in 2 ways, for example, as 91680625 + 40246336 = 9575^2 + 6344^2 .

It is a cyclic number.

It is not a de Polignac number, because 131926961 - 2¹⁴ = 131910577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131926969) 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, 18980 + ... + 24981.

It is an arithmetic number, because the mean of its divisors is an integer number (32993481).

Almost surely, 2^131926961 is an apocalyptic number.

It is an amenable number.

131926961 is a deficient number, since it is larger than the sum of its proper divisors (46963).

131926961 is an equidigital number, since it uses as much as digits as its factorization.

131926961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46962.

The product of its digits is 17496, while the sum is 38.

The square root of 131926961 is about 11485.9462387737. The cubic root of 131926961 is about 509.0704083920.

The spelling of 131926961 in words is "one hundred thirty-one million, nine hundred twenty-six thousand, nine hundred sixty-one".