313012222442 has 4 divisors (see below), whose sum is σ = 469518333666. Its totient is φ = 156506111220.

The previous prime is 313012222427. The next prime is 313012222493. The reversal of 313012222442 is 244222210313.

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., 230562268561 + 82449953881 = 480169^2 + 287141^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78253055609 + ... + 78253055612.

Almost surely, 2^313012222442 is an apocalyptic number.

313012222442 is a deficient number, since it is larger than the sum of its proper divisors (156506111224).

313012222442 is a wasteful number, since it uses less digits than its factorization.

313012222442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156506111223.

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 313012222442 its reverse (244222210313), we get a palindrome (557234432755).

The spelling of 313012222442 in words is "three hundred thirteen billion, twelve million, two hundred twenty-two thousand, four hundred forty-two".