31401885712 has 20 divisors (see below), whose sum is σ = 60845597820. Its totient is φ = 15699795968.

The previous prime is 31401885649. The next prime is 31401885719. The reversal of 31401885712 is 21758810413.

It can be written as a sum of positive squares in 2 ways, for example, as 8000229136 + 23401656576 = 89444^2 + 152976^2 .

It is not an unprimeable number, because it can be changed into a prime (31401885719) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 181248 + ... + 309280.

It is an arithmetic number, because the mean of its divisors is an integer number (3042279891).

Almost surely, 2^31401885712 is an apocalyptic number.

It is an amenable number.

31401885712 is a deficient number, since it is larger than the sum of its proper divisors (29443712108).

31401885712 is a wasteful number, since it uses less digits than its factorization.

31401885712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143370 (or 143364 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 40.

The spelling of 31401885712 in words is "thirty-one billion, four hundred one million, eight hundred eighty-five thousand, seven hundred twelve".