31123303108 has 24 divisors (see below), whose sum is σ = 55422057600. Its totient is φ = 15288745248.

The previous prime is 31123303103. The next prime is 31123303109. The reversal of 31123303108 is 80130332113.

It is not an unprimeable number, because it can be changed into a prime (31123303103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 364741 + ... + 441907.

It is an arithmetic number, because the mean of its divisors is an integer number (2309252400).

Almost surely, 2^31123303108 is an apocalyptic number.

It is an amenable number.

31123303108 is a deficient number, since it is larger than the sum of its proper divisors (24298754492).

31123303108 is a wasteful number, since it uses less digits than its factorization.

31123303108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78939 (or 78937 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 25.

The spelling of 31123303108 in words is "thirty-one billion, one hundred twenty-three million, three hundred three thousand, one hundred eight".