31213044068 has 6 divisors (see below), whose sum is σ = 54622827126. Its totient is φ = 15606522032.

The previous prime is 31213044053. The next prime is 31213044073. The reversal of 31213044068 is 86044031213.

It can be written as a sum of positive squares in only one way, i.e., 18182364964 + 13030679104 = 134842^2 + 114152^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3901630505 + ... + 3901630512.

It is an arithmetic number, because the mean of its divisors is an integer number (9103804521).

Almost surely, 2^31213044068 is an apocalyptic number.

It is an amenable number.

31213044068 is a deficient number, since it is larger than the sum of its proper divisors (23409783058).

31213044068 is a wasteful number, since it uses less digits than its factorization.

31213044068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7803261021 (or 7803261019 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 32.

The spelling of 31213044068 in words is "thirty-one billion, two hundred thirteen million, forty-four thousand, sixty-eight".