31400323842 has 16 divisors (see below), whose sum is σ = 62804306592. Its totient is φ = 10466164800.

The previous prime is 31400323831. The next prime is 31400323849. The reversal of 31400323842 is 24832300413.

It is not an unprimeable number, because it can be changed into a prime (31400323849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33784 + ... + 252867.

It is an arithmetic number, because the mean of its divisors is an integer number (3925269162).

Almost surely, 2^31400323842 is an apocalyptic number.

31400323842 is an abundant number, since it is smaller than the sum of its proper divisors (31403982750).

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

31400323842 is a wasteful number, since it uses less digits than its factorization.

31400323842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304913.

The product of its (nonzero) digits is 13824, while the sum is 30.

The spelling of 31400323842 in words is "thirty-one billion, four hundred million, three hundred twenty-three thousand, eight hundred forty-two".