31323320230021 has 8 divisors (see below), whose sum is σ = 32228707984160. Its totient is φ = 30421027819728.

The previous prime is 31323320229997. The next prime is 31323320230031. The reversal of 31323320230021 is 12003202332313.

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 31323320230021 - 2¹¹ = 31323320227973 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 (31323320230031) 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, 773815431 + ... + 773855908.

It is an arithmetic number, because the mean of its divisors is an integer number (4028588498020).

Almost surely, 2^{31323320230021} is an apocalyptic number.

It is an amenable number.

31323320230021 is a deficient number, since it is larger than the sum of its proper divisors (905387754139).

31323320230021 is a wasteful number, since it uses less digits than its factorization.

31323320230021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1547671923.

The product of its (nonzero) digits is 3888, while the sum is 25.

Adding to 31323320230021 its reverse (12003202332313), we get a palindrome (43326522562334).

The spelling of 31323320230021 in words is "thirty-one trillion, three hundred twenty-three billion, three hundred twenty million, two hundred thirty thousand, twenty-one".