131941973 has 2 divisors, whose sum is σ = 131941974. Its totient is φ = 131941972.

The previous prime is 131941949. The next prime is 131942003. The reversal of 131941973 is 379149131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 79263409 + 52678564 = 8903^2 + 7258^2 .

It is a cyclic number.

It is not a de Polignac number, because 131941973 - 2⁸ = 131941717 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131941933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65970986 + 65970987.

It is an arithmetic number, because the mean of its divisors is an integer number (65970987).

Almost surely, 2^131941973 is an apocalyptic number.

It is an amenable number.

131941973 is a deficient number, since it is larger than the sum of its proper divisors (1).

131941973 is an equidigital number, since it uses as much as digits as its factorization.

131941973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20412, while the sum is 38.

The square root of 131941973 is about 11486.5997144499. The cubic root of 131941973 is about 509.0897167402.

The spelling of 131941973 in words is "one hundred thirty-one million, nine hundred forty-one thousand, nine hundred seventy-three".