31380862854 has 48 divisors (see below), whose sum is σ = 69051003840. Its totient is φ = 9500396400.

The previous prime is 31380862837. The next prime is 31380862907. The reversal of 31380862854 is 45826808313.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 772257 + ... + 811875.

It is an arithmetic number, because the mean of its divisors is an integer number (1438562580).

Almost surely, 2^31380862854 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31380862854, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34525501920).

31380862854 is an abundant number, since it is smaller than the sum of its proper divisors (37670140986).

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

31380862854 is a wasteful number, since it uses less digits than its factorization.

31380862854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40737 (or 40726 counting only the distinct ones).

The product of its (nonzero) digits is 1105920, while the sum is 48.

The spelling of 31380862854 in words is "thirty-one billion, three hundred eighty million, eight hundred sixty-two thousand, eight hundred fifty-four".