31941565412 has 24 divisors (see below), whose sum is σ = 56418450816. Its totient is φ = 15822628128.

The previous prime is 31941565391. The next prime is 31941565417. The reversal of 31941565412 is 21456514913.

It is a self number, because there is not a number n which added to its sum of digits gives 31941565412.

It is not an unprimeable number, because it can be changed into a prime (31941565417) 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, 129413 + ... + 283955.

It is an arithmetic number, because the mean of its divisors is an integer number (2350768784).

Almost surely, 2^31941565412 is an apocalyptic number.

It is an amenable number.

31941565412 is a deficient number, since it is larger than the sum of its proper divisors (24476885404).

31941565412 is a wasteful number, since it uses less digits than its factorization.

31941565412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155027 (or 155025 counting only the distinct ones).

The product of its digits is 129600, while the sum is 41.

The spelling of 31941565412 in words is "thirty-one billion, nine hundred forty-one million, five hundred sixty-five thousand, four hundred twelve".