313122021020 has 24 divisors (see below), whose sum is σ = 671546804544. Its totient is φ = 122583939776.

The previous prime is 313122021007. The next prime is 313122021083. The reversal of 313122021020 is 20120221313.

It is a self number, because there is not a number n which added to its sum of digits gives 313122021020.

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, 166553327 + ... + 166555206.

It is an arithmetic number, because the mean of its divisors is an integer number (27981116856).

Almost surely, 2^313122021020 is an apocalyptic number.

It is an amenable number.

313122021020 is an abundant number, since it is smaller than the sum of its proper divisors (358424783524).

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

313122021020 is a wasteful number, since it uses less digits than its factorization.

313122021020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333108589 (or 333108587 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 313122021020 its reverse (20120221313), we get a palindrome (333242242333).

The spelling of 313122021020 in words is "three hundred thirteen billion, one hundred twenty-two million, twenty-one thousand, twenty".