315256018871 has 2 divisors, whose sum is σ = 315256018872. Its totient is φ = 315256018870.

The previous prime is 315256018853. The next prime is 315256018897. The reversal of 315256018871 is 178810652513.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 315256018871 - 2³⁴ = 298076149687 is a prime.

It is a super-2 number, since 2×315256018871² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (315256008871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157628009435 + 157628009436.

It is an arithmetic number, because the mean of its divisors is an integer number (157628009436).

Almost surely, 2^315256018871 is an apocalyptic number.

315256018871 is a deficient number, since it is larger than the sum of its proper divisors (1).

315256018871 is an equidigital number, since it uses as much as digits as its factorization.

315256018871 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 403200, while the sum is 47.

The spelling of 315256018871 in words is "three hundred fifteen billion, two hundred fifty-six million, eighteen thousand, eight hundred seventy-one".