31428996140022 has 128 divisors (see below), whose sum is σ = 70128119513088. Its totient is φ = 9324884419200.

The previous prime is 31428996139993. The next prime is 31428996140137. The reversal of 31428996140022 is 22004169982413.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2516931063 + ... + 2516943549.

It is an arithmetic number, because the mean of its divisors is an integer number (547875933696).

Almost surely, 2^{31428996140022} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31428996140022, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35064059756544).

31428996140022 is an abundant number, since it is smaller than the sum of its proper divisors (38699123373066).

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

31428996140022 is a wasteful number, since it uses less digits than its factorization.

31428996140022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16194.

The product of its (nonzero) digits is 1492992, while the sum is 51.

The spelling of 31428996140022 in words is "thirty-one trillion, four hundred twenty-eight billion, nine hundred ninety-six million, one hundred forty thousand, twenty-two".