131715601 has 2 divisors, whose sum is σ = 131715602. Its totient is φ = 131715600.

The previous prime is 131715557. The next prime is 131715607. The reversal of 131715601 is 106517131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 112784400 + 18931201 = 10620^2 + 4351^2 .

It is a cyclic number.

It is not a de Polignac number, because 131715601 - 2¹¹ = 131713553 is a prime.

It is not a weakly prime, because it can be changed into another prime (131715607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65857800 + 65857801.

It is an arithmetic number, because the mean of its divisors is an integer number (65857801).

Almost surely, 2^131715601 is an apocalyptic number.

It is an amenable number.

131715601 is a deficient number, since it is larger than the sum of its proper divisors (1).

131715601 is an equidigital number, since it uses as much as digits as its factorization.

131715601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 630, while the sum is 25.

The square root of 131715601 is about 11476.7417414526. The cubic root of 131715601 is about 508.7984027501.

The spelling of 131715601 in words is "one hundred thirty-one million, seven hundred fifteen thousand, six hundred one".