31406948118 has 96 divisors (see below), whose sum is σ = 84899470656. Its totient is φ = 8169652224.

The previous prime is 31406948117. The next prime is 31406948141. The reversal of 31406948118 is 81184960413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31406948117) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11755 + ... + 250902.

It is an arithmetic number, because the mean of its divisors is an integer number (884369486).

Almost surely, 2^31406948118 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31406948118, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42449735328).

31406948118 is an abundant number, since it is smaller than the sum of its proper divisors (53492522538).

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

31406948118 is a wasteful number, since it uses less digits than its factorization.

31406948118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262758 (or 262755 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The spelling of 31406948118 in words is "thirty-one billion, four hundred six million, nine hundred forty-eight thousand, one hundred eighteen".