31323020021321 has 8 divisors (see below), whose sum is σ = 36670852708224. Its totient is φ = 26193466219680.

The previous prime is 31323020021309. The next prime is 31323020021341. The reversal of 31323020021321 is 12312002032313.

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

It is a cyclic number.

It is not a de Polignac number, because 31323020021321 - 2¹⁴ = 31323020004937 is a prime.

It is a super-2 number, since 2×31323020021321² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31323020021341) 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, 54569721005 + ... + 54569721578.

It is an arithmetic number, because the mean of its divisors is an integer number (4583856588528).

Almost surely, 2^{31323020021321} is an apocalyptic number.

It is an amenable number.

31323020021321 is a deficient number, since it is larger than the sum of its proper divisors (5347832686903).

31323020021321 is a wasteful number, since it uses less digits than its factorization.

31323020021321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109139442631.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 31323020021321 its reverse (12312002032313), we get a palindrome (43635022053634).

The spelling of 31323020021321 in words is "thirty-one trillion, three hundred twenty-three billion, twenty million, twenty-one thousand, three hundred twenty-one".