313121021332 has 24 divisors (see below), whose sum is σ = 632442464640. Its totient is φ = 132866061600.

The previous prime is 313121021309. The next prime is 313121021341. The reversal of 313121021332 is 233120121313.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55358032 + ... + 55363687.

It is an arithmetic number, because the mean of its divisors is an integer number (26351769360).

Almost surely, 2^313121021332 is an apocalyptic number.

It is an amenable number.

313121021332 is an abundant number, since it is smaller than the sum of its proper divisors (319321443308).

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

313121021332 is a wasteful number, since it uses less digits than its factorization.

313121021332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110721831 (or 110721829 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 313121021332 its reverse (233120121313), we get a palindrome (546241142645).

The spelling of 313121021332 in words is "three hundred thirteen billion, one hundred twenty-one million, twenty-one thousand, three hundred thirty-two".