313232000021 has 8 divisors (see below), whose sum is σ = 324292575000. Its totient is φ = 302188723200.

The previous prime is 313232000017. The next prime is 313232000051. The reversal of 313232000021 is 120000232313.

It can be written as a sum of positive squares in 4 ways, for example, as 13251232996 + 299980767025 = 115114^2 + 547705^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 313232000021 - 2² = 313232000017 is a prime.

It is a super-2 number, since 2×313232000021² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313232000051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4287680 + ... + 4360121.

It is an arithmetic number, because the mean of its divisors is an integer number (40536571875).

Almost surely, 2^313232000021 is an apocalyptic number.

It is an amenable number.

313232000021 is a deficient number, since it is larger than the sum of its proper divisors (11060574979).

313232000021 is a wasteful number, since it uses less digits than its factorization.

313232000021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8649079.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 313232000021 its reverse (120000232313), we get a palindrome (433232232334).

The spelling of 313232000021 in words is "three hundred thirteen billion, two hundred thirty-two million, twenty-one", and thus it is an aban number.