31268307120 has 80 divisors (see below), whose sum is σ = 97473404160. Its totient is φ = 8291621632.

The previous prime is 31268307107. The next prime is 31268307121. The reversal of 31268307120 is 2170386213.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (31268307121) 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, 320964 + ... + 406883.

It is an arithmetic number, because the mean of its divisors is an integer number (1218417552).

Almost surely, 2^31268307120 is an apocalyptic number.

31268307120 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31268307120 is an abundant number, since it is smaller than the sum of its proper divisors (66205097040).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31268307120 is a wasteful number, since it uses less digits than its factorization.

31268307120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 728042 (or 728036 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 33.

The spelling of 31268307120 in words is "thirty-one billion, two hundred sixty-eight million, three hundred seven thousand, one hundred twenty".