31107708961 has 8 divisors (see below), whose sum is σ = 37642942080. Its totient is φ = 25095294528.

The previous prime is 31107708949. The next prime is 31107708971. The reversal of 31107708961 is 16980770113.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31107708961 - 2¹⁹ = 31107184673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31107708971) 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, 130704541 + ... + 130704778.

It is an arithmetic number, because the mean of its divisors is an integer number (4705367760).

Almost surely, 2^31107708961 is an apocalyptic number.

It is an amenable number.

31107708961 is a deficient number, since it is larger than the sum of its proper divisors (6535233119).

31107708961 is a wasteful number, since it uses less digits than its factorization.

31107708961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261409343.

The product of its (nonzero) digits is 63504, while the sum is 43.

The spelling of 31107708961 in words is "thirty-one billion, one hundred seven million, seven hundred eight thousand, nine hundred sixty-one".