31430245008 has 80 divisors (see below), whose sum is σ = 84071761920. Its totient is φ = 10106191872.

The previous prime is 31430244959. The next prime is 31430245009. The reversal of 31430245008 is 80054203413.

It is not an unprimeable number, because it can be changed into a prime (31430245009) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1595185 + ... + 1614767.

It is an arithmetic number, because the mean of its divisors is an integer number (1050897024).

Almost surely, 2^31430245008 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 31430245008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42035880960).

31430245008 is an abundant number, since it is smaller than the sum of its proper divisors (52641516912).

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

31430245008 is a wasteful number, since it uses less digits than its factorization.

31430245008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20776 (or 20770 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

The spelling of 31430245008 in words is "thirty-one billion, four hundred thirty million, two hundred forty-five thousand, eight".