312105315 has 16 divisors (see below), whose sum is σ = 505387008. Its totient is φ = 164450016.

The previous prime is 312105307. The next prime is 312105319. The reversal of 312105315 is 513501213.

It is not a de Polignac number, because 312105315 - 2³ = 312105307 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 312105291 and 312105300.

It is not an unprimeable number, because it can be changed into a prime (312105319) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 124099 + ... + 126588.

It is an arithmetic number, because the mean of its divisors is an integer number (31586688).

Almost surely, 2^312105315 is an apocalyptic number.

312105315 is a deficient number, since it is larger than the sum of its proper divisors (193281693).

312105315 is a wasteful number, since it uses less digits than its factorization.

312105315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250778.

The product of its (nonzero) digits is 450, while the sum is 21.

The square root of 312105315 is about 17666.5026250246. The cubic root of 312105315 is about 678.3185931447.

Adding to 312105315 its reverse (513501213), we get a palindrome (825606528).

The spelling of 312105315 in words is "three hundred twelve million, one hundred five thousand, three hundred fifteen".