31100978225380 has 96 divisors (see below), whose sum is σ = 75366181642752. Its totient is φ = 10560276633600.

The previous prime is 31100978225351. The next prime is 31100978225399. The reversal of 31100978225380 is 8352287900113.

It is a super-2 number, since 2×31100978225380² (a number of 28 digits) contains 22 as substring.

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, 3560577 + ... + 8653303.

It is an arithmetic number, because the mean of its divisors is an integer number (785064392112).

Almost surely, 2^{31100978225380} 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 31100978225380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37683090821376).

31100978225380 is an abundant number, since it is smaller than the sum of its proper divisors (44265203417372).

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

31100978225380 is a wasteful number, since it uses less digits than its factorization.

31100978225380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5093165 (or 5093163 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 49.

The spelling of 31100978225380 in words is "thirty-one trillion, one hundred billion, nine hundred seventy-eight million, two hundred twenty-five thousand, three hundred eighty".