131573723 has 2 divisors, whose sum is σ = 131573724. Its totient is φ = 131573722.

The previous prime is 131573683. The next prime is 131573737. The reversal of 131573723 is 327375131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 131573723 - 2⁸ = 131573467 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 131573723.

It is not a weakly prime, because it can be changed into another prime (131573023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65786861 + 65786862.

It is an arithmetic number, because the mean of its divisors is an integer number (65786862).

Almost surely, 2^131573723 is an apocalyptic number.

131573723 is a deficient number, since it is larger than the sum of its proper divisors (1).

131573723 is an equidigital number, since it uses as much as digits as its factorization.

131573723 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13230, while the sum is 32.

The square root of 131573723 is about 11470.5589663277. The cubic root of 131573723 is about 508.6156523553.

The spelling of 131573723 in words is "one hundred thirty-one million, five hundred seventy-three thousand, seven hundred twenty-three".