131679973 has 2 divisors, whose sum is σ = 131679974. Its totient is φ = 131679972.

The previous prime is 131679953. The next prime is 131680009. The reversal of 131679973 is 379976131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 118004769 + 13675204 = 10863^2 + 3698^2 .

It is an emirp because it is prime and its reverse (379976131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 131679973 - 2²⁵ = 98125541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131679953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65839986 + 65839987.

It is an arithmetic number, because the mean of its divisors is an integer number (65839987).

Almost surely, 2^131679973 is an apocalyptic number.

It is an amenable number.

131679973 is a deficient number, since it is larger than the sum of its proper divisors (1).

131679973 is an equidigital number, since it uses as much as digits as its factorization.

131679973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 214326, while the sum is 46.

The square root of 131679973 is about 11475.1894537737. The cubic root of 131679973 is about 508.7525233350.

The spelling of 131679973 in words is "one hundred thirty-one million, six hundred seventy-nine thousand, nine hundred seventy-three".