315257351323561 has 8 divisors (see below), whose sum is σ = 315786513037280. Its totient is φ = 314728253677728.

The previous prime is 315257351323547. The next prime is 315257351323571. The reversal of 315257351323561 is 165323153752513.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 315257351323561 - 2¹¹ = 315257351321513 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 315257351323499 and 315257351323508.

It is not an unprimeable number, because it can be changed into a prime (315257351323571) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6162276 + ... + 25855141.

It is an arithmetic number, because the mean of its divisors is an integer number (39473314129660).

Almost surely, 2^{315257351323561} is an apocalyptic number.

It is an amenable number.

315257351323561 is a deficient number, since it is larger than the sum of its proper divisors (529161713719).

315257351323561 is a wasteful number, since it uses less digits than its factorization.

315257351323561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32033943.

The product of its digits is 8505000, while the sum is 52.

The spelling of 315257351323561 in words is "three hundred fifteen trillion, two hundred fifty-seven billion, three hundred fifty-one million, three hundred twenty-three thousand, five hundred sixty-one".