313521315 has 8 divisors (see below), whose sum is σ = 501634128. Its totient is φ = 167211360.

The previous prime is 313521283. The next prime is 313521323. The reversal of 313521315 is 513125313.

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

It is not a de Polignac number, because 313521315 - 2⁵ = 313521283 is a prime.

It is a super-2 number, since 2×313521315² = 196591229918658450, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10450696 + ... + 10450725.

It is an arithmetic number, because the mean of its divisors is an integer number (62704266).

Almost surely, 2^313521315 is an apocalyptic number.

313521315 is a deficient number, since it is larger than the sum of its proper divisors (188112813).

313521315 is a wasteful number, since it uses less digits than its factorization.

313521315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20901429.

The product of its digits is 1350, while the sum is 24.

The square root of 313521315 is about 17706.5331163387. The cubic root of 313521315 is about 679.3428736889.

Adding to 313521315 its reverse (513125313), we get a palindrome (826646628).

The spelling of 313521315 in words is "three hundred thirteen million, five hundred twenty-one thousand, three hundred fifteen".