31110034021 has 32 divisors (see below), whose sum is σ = 34988728320. Its totient is φ = 27423489600.

The previous prime is 31110034019. The next prime is 31110034027. The reversal of 31110034021 is 12043001113.

It is a cyclic number.

It is not a de Polignac number, because 31110034021 - 2¹ = 31110034019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31110033986 and 31110034004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31110034027) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13053796 + ... + 13056178.

It is an arithmetic number, because the mean of its divisors is an integer number (1093397760).

Almost surely, 2^31110034021 is an apocalyptic number.

It is an amenable number.

31110034021 is a deficient number, since it is larger than the sum of its proper divisors (3878694299).

31110034021 is a wasteful number, since it uses less digits than its factorization.

31110034021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2737.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 31110034021 its reverse (12043001113), we get a palindrome (43153035134).

The spelling of 31110034021 in words is "thirty-one billion, one hundred ten million, thirty-four thousand, twenty-one".