31400441688 has 128 divisors (see below), whose sum is σ = 99954155520. Its totient is φ = 7982405760.

The previous prime is 31400441669. The next prime is 31400441711. The reversal of 31400441688 is 88614400413.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 93906 + ... + 267617.

It is an arithmetic number, because the mean of its divisors is an integer number (780891840).

Almost surely, 2^31400441688 is an apocalyptic number.

It is an amenable number.

31400441688 is an abundant number, since it is smaller than the sum of its proper divisors (68553713832).

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

31400441688 is a wasteful number, since it uses less digits than its factorization.

31400441688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361597 (or 361593 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 39.

The spelling of 31400441688 in words is "thirty-one billion, four hundred million, four hundred forty-one thousand, six hundred eighty-eight".