315888548531 has 2 divisors, whose sum is σ = 315888548532. Its totient is φ = 315888548530.

The previous prime is 315888548453. The next prime is 315888548551. The reversal of 315888548531 is 135845888513.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-315888548531 is a prime.

It is a super-2 number, since 2×315888548531² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (315888548551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157944274265 + 157944274266.

It is an arithmetic number, because the mean of its divisors is an integer number (157944274266).

Almost surely, 2^315888548531 is an apocalyptic number.

315888548531 is a deficient number, since it is larger than the sum of its proper divisors (1).

315888548531 is an equidigital number, since it uses as much as digits as its factorization.

315888548531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18432000, while the sum is 59.

The spelling of 315888548531 in words is "three hundred fifteen billion, eight hundred eighty-eight million, five hundred forty-eight thousand, five hundred thirty-one".