313121001323442 has 64 divisors (see below), whose sum is σ = 674713007345664. Its totient is φ = 96302279673600.

The previous prime is 313121001323411. The next prime is 313121001323453. The reversal of 313121001323442 is 244323100121313.

It is a super-2 number, since 2×313121001323442² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3542168788 + ... + 3542257184.

It is an arithmetic number, because the mean of its divisors is an integer number (10542390739776).

Almost surely, 2^{313121001323442} is an apocalyptic number.

313121001323442 is an abundant number, since it is smaller than the sum of its proper divisors (361592006022222).

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

313121001323442 is a wasteful number, since it uses less digits than its factorization.

313121001323442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108003.

The product of its (nonzero) digits is 10368, while the sum is 30.

Adding to 313121001323442 its reverse (244323100121313), we get a palindrome (557444101444755).

The spelling of 313121001323442 in words is "three hundred thirteen trillion, one hundred twenty-one billion, one million, three hundred twenty-three thousand, four hundred forty-two".