31376138332 has 96 divisors (see below), whose sum is σ = 73402398720. Its totient is φ = 11359595520.

The previous prime is 31376138309. The next prime is 31376138341. The reversal of 31376138332 is 23383167313.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 375718 + ... + 451570.

It is an arithmetic number, because the mean of its divisors is an integer number (764608320).

Almost surely, 2^31376138332 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31376138332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36701199360).

31376138332 is an abundant number, since it is smaller than the sum of its proper divisors (42026260388).

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

31376138332 is a wasteful number, since it uses less digits than its factorization.

31376138332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75971 (or 75969 counting only the distinct ones).

The product of its digits is 163296, while the sum is 40.

The spelling of 31376138332 in words is "thirty-one billion, three hundred seventy-six million, one hundred thirty-eight thousand, three hundred thirty-two".