313121202312 has 16 divisors (see below), whose sum is σ = 782803005840. Its totient is φ = 104373734096.

The previous prime is 313121202311. The next prime is 313121202353. The reversal of 313121202312 is 213202121313.

It is not an unprimeable number, because it can be changed into a prime (313121202311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6523358358 + ... + 6523358405.

It is an arithmetic number, because the mean of its divisors is an integer number (48925187865).

Almost surely, 2^313121202312 is an apocalyptic number.

It is an amenable number.

313121202312 is an abundant number, since it is smaller than the sum of its proper divisors (469681803528).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

313121202312 is a wasteful number, since it uses less digits than its factorization.

313121202312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13046716772 (or 13046716768 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 313121202312 its reverse (213202121313), we get a palindrome (526323323625).

The spelling of 313121202312 in words is "three hundred thirteen billion, one hundred twenty-one million, two hundred two thousand, three hundred twelve".