31332010021 has 48 divisors (see below), whose sum is σ = 38195115840. Its totient is φ = 25528089600.

The previous prime is 31332010009. The next prime is 31332010037. The reversal of 31332010021 is 12001023313.

It is not a de Polignac number, because 31332010021 - 2⁷ = 31332009893 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31332009977 and 31332010004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31332010081) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5510446 + ... + 5516128.

It is an arithmetic number, because the mean of its divisors is an integer number (795731580).

Almost surely, 2^31332010021 is an apocalyptic number.

It is an amenable number.

31332010021 is a deficient number, since it is larger than the sum of its proper divisors (6863105819).

31332010021 is a wasteful number, since it uses less digits than its factorization.

31332010021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5846 (or 5833 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 31332010021 its reverse (12001023313), we get a palindrome (43333033334).

The spelling of 31332010021 in words is "thirty-one billion, three hundred thirty-two million, ten thousand, twenty-one".