313012020122 has 4 divisors (see below), whose sum is σ = 469518030186. Its totient is φ = 156506010060.

The previous prime is 313012020077. The next prime is 313012020149. The reversal of 313012020122 is 221020210313.

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., 255771936121 + 57240084001 = 505739^2 + 239249^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 313012020122.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78253005029 + ... + 78253005032.

Almost surely, 2^313012020122 is an apocalyptic number.

313012020122 is a deficient number, since it is larger than the sum of its proper divisors (156506010064).

313012020122 is a wasteful number, since it uses less digits than its factorization.

313012020122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156506010063.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 313012020122 its reverse (221020210313), we get a palindrome (534032230435).

The spelling of 313012020122 in words is "three hundred thirteen billion, twelve million, twenty thousand, one hundred twenty-two".