312413813 has 4 divisors (see below), whose sum is σ = 314510700. Its totient is φ = 310316928.

The previous prime is 312413797. The next prime is 312413837. The reversal of 312413813 is 318314213.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15816529 + 296597284 = 3977^2 + 17222^2 .

It is a cyclic number.

It is not a de Polignac number, because 312413813 - 2⁴ = 312413797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312413863) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1048220 + ... + 1048517.

It is an arithmetic number, because the mean of its divisors is an integer number (78627675).

Almost surely, 2^312413813 is an apocalyptic number.

It is an amenable number.

312413813 is a deficient number, since it is larger than the sum of its proper divisors (2096887).

312413813 is a wasteful number, since it uses less digits than its factorization.

312413813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2096886.

The product of its digits is 1728, while the sum is 26.

The square root of 312413813 is about 17675.2316250735. The cubic root of 312413813 is about 678.5420124096.

The spelling of 312413813 in words is "three hundred twelve million, four hundred thirteen thousand, eight hundred thirteen".