31020448523 has 32 divisors (see below), whose sum is σ = 32679700032. Its totient is φ = 29424384000.

The previous prime is 31020448517. The next prime is 31020448541. The reversal of 31020448523 is 32584402013.

It is a cyclic number.

It is not a de Polignac number, because 31020448523 - 2⁴ = 31020448507 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31020448523.

It is not an unprimeable number, because it can be changed into a prime (31020448513) 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, 51614423 + ... + 51615023.

It is an arithmetic number, because the mean of its divisors is an integer number (1021240626).

Almost surely, 2^31020448523 is an apocalyptic number.

31020448523 is a deficient number, since it is larger than the sum of its proper divisors (1659251509).

31020448523 is a wasteful number, since it uses less digits than its factorization.

31020448523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 975.

The product of its (nonzero) digits is 23040, while the sum is 32.

The spelling of 31020448523 in words is "thirty-one billion, twenty million, four hundred forty-eight thousand, five hundred twenty-three".