315631308101 has 2 divisors, whose sum is σ = 315631308102. Its totient is φ = 315631308100.

The previous prime is 315631308049. The next prime is 315631308107. The reversal of 315631308101 is 101803136513.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 314413647076 + 1217661025 = 560726^2 + 34895^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-315631308101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (315631308107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157815654050 + 157815654051.

It is an arithmetic number, because the mean of its divisors is an integer number (157815654051).

Almost surely, 2^315631308101 is an apocalyptic number.

It is an amenable number.

315631308101 is a deficient number, since it is larger than the sum of its proper divisors (1).

315631308101 is an equidigital number, since it uses as much as digits as its factorization.

315631308101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 32.

The spelling of 315631308101 in words is "three hundred fifteen billion, six hundred thirty-one million, three hundred eight thousand, one hundred one".