313322022021 has 4 divisors (see below), whose sum is σ = 417762696032. Its totient is φ = 208881348012.

The previous prime is 313322022011. The next prime is 313322022059. The reversal of 313322022021 is 120220223313.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 313322022021 - 2⁷ = 313322021893 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 (313322022011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52220337001 + ... + 52220337006.

It is an arithmetic number, because the mean of its divisors is an integer number (104440674008).

Almost surely, 2^313322022021 is an apocalyptic number.

It is an amenable number.

313322022021 is a deficient number, since it is larger than the sum of its proper divisors (104440674011).

313322022021 is a wasteful number, since it uses less digits than its factorization.

313322022021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104440674010.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 313322022021 its reverse (120220223313), we get a palindrome (433542245334).

The spelling of 313322022021 in words is "three hundred thirteen billion, three hundred twenty-two million, twenty-two thousand, twenty-one".