312554394 has 12 divisors (see below), whose sum is σ = 677201226. Its totient is φ = 104184792.

The previous prime is 312554393. The next prime is 312554399. The reversal of 312554394 is 493455213.

312554394 is a `hidden beast` number, since 3 + 1 + 25 + 543 + 94 = 666.

It can be written as a sum of positive squares in only one way, i.e., 259628769 + 52925625 = 16113^2 + 7275^2 .

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (312554393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8682049 + ... + 8682084.

Almost surely, 2^312554394 is an apocalyptic number.

312554394 is an abundant number, since it is smaller than the sum of its proper divisors (364646832).

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

312554394 is a wasteful number, since it uses less digits than its factorization.

312554394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17364141 (or 17364138 counting only the distinct ones).

The product of its digits is 64800, while the sum is 36.

The square root of 312554394 is about 17679.2079573718. The cubic root of 312554394 is about 678.6437746730.

The spelling of 312554394 in words is "three hundred twelve million, five hundred fifty-four thousand, three hundred ninety-four".