315012561 has 8 divisors (see below), whose sum is σ = 431368704. Its totient is φ = 204332400.

The previous prime is 315012557. The next prime is 315012569. The reversal of 315012561 is 165210513.

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

It is not a de Polignac number, because 315012561 - 2² = 315012557 is a prime.

It is a super-3 number, since 3×315012561³ (a number of 26 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (315012569) 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, 1418865 + ... + 1419086.

It is an arithmetic number, because the mean of its divisors is an integer number (53921088).

Almost surely, 2^315012561 is an apocalyptic number.

It is an amenable number.

315012561 is a deficient number, since it is larger than the sum of its proper divisors (116356143).

315012561 is a wasteful number, since it uses less digits than its factorization.

315012561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2837991.

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 315012561 is about 17748.5932118577. The cubic root of 315012561 is about 680.4182555176.

The spelling of 315012561 in words is "three hundred fifteen million, twelve thousand, five hundred sixty-one".