312860242 has 4 divisors (see below), whose sum is σ = 469290366. Its totient is φ = 156430120.

The previous prime is 312860239. The next prime is 312860263. The reversal of 312860242 is 242068213.

312860242 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in only one way, i.e., 274531761 + 38328481 = 16569^2 + 6191^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 312860242.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78215059 + ... + 78215062.

Almost surely, 2^312860242 is an apocalyptic number.

312860242 is a deficient number, since it is larger than the sum of its proper divisors (156430124).

312860242 is a wasteful number, since it uses less digits than its factorization.

312860242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156430123.

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 312860242 is about 17687.8557773406. The cubic root of 312860242 is about 678.8650632756.

The spelling of 312860242 in words is "three hundred twelve million, eight hundred sixty thousand, two hundred forty-two".