31323918873 has 16 divisors (see below), whose sum is σ = 45934914816. Its totient is φ = 18866123520.

The previous prime is 31323918853. The next prime is 31323918931. The reversal of 31323918873 is 37881932313.

It is not a de Polignac number, because 31323918873 - 2⁵ = 31323918841 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31323918823) 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, 8542608 + ... + 8546273.

It is an arithmetic number, because the mean of its divisors is an integer number (2870932176).

Almost surely, 2^31323918873 is an apocalyptic number.

It is an amenable number.

31323918873 is a deficient number, since it is larger than the sum of its proper divisors (14610995943).

31323918873 is a wasteful number, since it uses less digits than its factorization.

31323918873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17088944.

The product of its digits is 653184, while the sum is 48.

The spelling of 31323918873 in words is "thirty-one billion, three hundred twenty-three million, nine hundred eighteen thousand, eight hundred seventy-three".