313121021322 has 32 divisors (see below), whose sum is σ = 643210847424. Its totient is φ = 101545920000.

The previous prime is 313121021309. The next prime is 313121021341. The reversal of 313121021322 is 223120121313.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4046697 + ... + 4123347.

It is an arithmetic number, because the mean of its divisors is an integer number (20100338982).

Almost surely, 2^313121021322 is an apocalyptic number.

313121021322 is an abundant number, since it is smaller than the sum of its proper divisors (330089826102).

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

313121021322 is a wasteful number, since it uses less digits than its factorization.

313121021322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95094.

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

Adding to 313121021322 its reverse (223120121313), we get a palindrome (536241142635).

Subtracting from 313121021322 its reverse (223120121313), we obtain a palindrome (90000900009).

The spelling of 313121021322 in words is "three hundred thirteen billion, one hundred twenty-one million, twenty-one thousand, three hundred twenty-two".