313012121213 has 16 divisors (see below), whose sum is σ = 344960223552. Its totient is φ = 281647920000.

The previous prime is 313012121161. The next prime is 313012121237. The reversal of 313012121213 is 312121210313.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 313012121213 - 2¹⁰ = 313012120189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313012121413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3514553 + ... + 3602513.

It is an arithmetic number, because the mean of its divisors is an integer number (21560013972).

Almost surely, 2^313012121213 is an apocalyptic number.

It is an amenable number.

313012121213 is a deficient number, since it is larger than the sum of its proper divisors (31948102339).

313012121213 is a wasteful number, since it uses less digits than its factorization.

313012121213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91276.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 313012121213 its reverse (312121210313), we get a palindrome (625133331526).

The spelling of 313012121213 in words is "three hundred thirteen billion, twelve million, one hundred twenty-one thousand, two hundred thirteen".