312311394 has 12 divisors (see below), whose sum is σ = 676674726. Its totient is φ = 104103792.

The previous prime is 312311371. The next prime is 312311401. The reversal of 312311394 is 493113213.

312311394 is a `hidden beast` number, since 312 + 311 + 39 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 197543025 + 114768369 = 14055^2 + 10713^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8675299 + ... + 8675334.

Almost surely, 2^312311394 is an apocalyptic number.

312311394 is an abundant number, since it is smaller than the sum of its proper divisors (364363332).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

312311394 is a wasteful number, since it uses less digits than its factorization.

312311394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17350641 (or 17350638 counting only the distinct ones).

The product of its digits is 1944, while the sum is 27.

The square root of 312311394 is about 17672.3341412503. The cubic root of 312311394 is about 678.4678552211.

The spelling of 312311394 in words is "three hundred twelve million, three hundred eleven thousand, three hundred ninety-four".