315852981 has 8 divisors (see below), whose sum is σ = 426468480. Its totient is φ = 207903072.

The previous prime is 315852961. The next prime is 315852983. The reversal of 315852981 is 189258513.

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

It is not a de Polignac number, because 315852981 - 2¹⁴ = 315836597 is a prime.

It is a super-2 number, since 2×315852981² = 199526211213172722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315852983) 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, 666120 + ... + 666593.

It is an arithmetic number, because the mean of its divisors is an integer number (53308560).

Almost surely, 2^315852981 is an apocalyptic number.

It is an amenable number.

315852981 is a deficient number, since it is larger than the sum of its proper divisors (110615499).

315852981 is a wasteful number, since it uses less digits than its factorization.

315852981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1332795.

The product of its digits is 86400, while the sum is 42.

The square root of 315852981 is about 17772.2531210874. The cubic root of 315852981 is about 681.0228127108.

The spelling of 315852981 in words is "three hundred fifteen million, eight hundred fifty-two thousand, nine hundred eighty-one".