31343014021 has 16 divisors (see below), whose sum is σ = 34659001728. Its totient is φ = 28106956800.

The previous prime is 31343014013. The next prime is 31343014049. The reversal of 31343014021 is 12041034313.

It is a cyclic number.

It is not a de Polignac number, because 31343014021 - 2³ = 31343014013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31343013983 and 31343014001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31343014421) 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, 237361 + ... + 345001.

It is an arithmetic number, because the mean of its divisors is an integer number (2166187608).

Almost surely, 2^31343014021 is an apocalyptic number.

It is an amenable number.

31343014021 is a deficient number, since it is larger than the sum of its proper divisors (3315987707).

31343014021 is a wasteful number, since it uses less digits than its factorization.

31343014021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108012.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 31343014021 its reverse (12041034313), we get a palindrome (43384048334).

The spelling of 31343014021 in words is "thirty-one billion, three hundred forty-three million, fourteen thousand, twenty-one".