31023414021 has 16 divisors (see below), whose sum is σ = 42704365568. Its totient is φ = 20012540400.

The previous prime is 31023413999. The next prime is 31023414061. The reversal of 31023414021 is 12041432013.

It is not a de Polignac number, because 31023414021 - 2⁶ = 31023413957 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31023414061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 938586 + ... + 971076.

It is an arithmetic number, because the mean of its divisors is an integer number (2669022848).

Almost surely, 2^31023414021 is an apocalyptic number.

31023414021 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

31023414021 is a deficient number, since it is larger than the sum of its proper divisors (11680951547).

31023414021 is a wasteful number, since it uses less digits than its factorization.

31023414021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42792.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 31023414021 its reverse (12041432013), we get a palindrome (43064846034).

The spelling of 31023414021 in words is "thirty-one billion, twenty-three million, four hundred fourteen thousand, twenty-one".