31936454874 has 96 divisors (see below), whose sum is σ = 75073703040. Its totient is φ = 10062055872.

The previous prime is 31936454801. The next prime is 31936454899. The reversal of 31936454874 is 47845463913.

31936454874 is a `hidden beast` number, since 3 + 1 + 93 + 6 + 4 + 548 + 7 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 31936454874.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9803854 + ... + 9807110.

It is an arithmetic number, because the mean of its divisors is an integer number (782017740).

Almost surely, 2^31936454874 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31936454874, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37536851520).

31936454874 is an abundant number, since it is smaller than the sum of its proper divisors (43137248166).

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

31936454874 is a wasteful number, since it uses less digits than its factorization.

31936454874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3809 (or 3784 counting only the distinct ones).

The product of its digits is 8709120, while the sum is 54.

The spelling of 31936454874 in words is "thirty-one billion, nine hundred thirty-six million, four hundred fifty-four thousand, eight hundred seventy-four".