313120012121 has 48 divisors (see below), whose sum is σ = 380210713344. Its totient is φ = 256885364736.

The previous prime is 313120012111. The next prime is 313120012123. The reversal of 313120012121 is 121210021313.

It is not a de Polignac number, because 313120012121 - 2⁶ = 313120012057 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 313120012121.

It is not an unprimeable number, because it can be changed into a prime (313120012123) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 148186361 + ... + 148188473.

It is an arithmetic number, because the mean of its divisors is an integer number (7921056528).

Almost surely, 2^313120012121 is an apocalyptic number.

It is an amenable number.

313120012121 is a deficient number, since it is larger than the sum of its proper divisors (67090701223).

313120012121 is a wasteful number, since it uses less digits than its factorization.

313120012121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3550 (or 3543 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 313120012121 its reverse (121210021313), we get a palindrome (434330033434).

The spelling of 313120012121 in words is "three hundred thirteen billion, one hundred twenty million, twelve thousand, one hundred twenty-one".