312315442 has 12 divisors (see below), whose sum is σ = 485187066. Its totient is φ = 150772160.

The previous prime is 312315433. The next prime is 312315457. The reversal of 312315442 is 244513213.

It can be written as a sum of positive squares in 3 ways, for example, as 293471161 + 18844281 = 17131^2 + 4341^2 .

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, 91159 + ... + 94522.

Almost surely, 2^312315442 is an apocalyptic number.

312315442 is a deficient number, since it is larger than the sum of its proper divisors (172871624).

312315442 is a wasteful number, since it uses less digits than its factorization.

312315442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185741 (or 185712 counting only the distinct ones).

The product of its digits is 2880, while the sum is 25.

The square root of 312315442 is about 17672.4486701758. The cubic root of 312315442 is about 678.4707865113.

Adding to 312315442 its reverse (244513213), we get a palindrome (556828655).

The spelling of 312315442 in words is "three hundred twelve million, three hundred fifteen thousand, four hundred forty-two".