31430324044 has 24 divisors (see below), whose sum is σ = 65593721088. Its totient is φ = 12884480400.

The previous prime is 31430324017. The next prime is 31430324069. The reversal of 31430324044 is 44042303413.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24401782 + ... + 24403069.

It is an arithmetic number, because the mean of its divisors is an integer number (2733071712).

Almost surely, 2^31430324044 is an apocalyptic number.

It is an amenable number.

31430324044 is an abundant number, since it is smaller than the sum of its proper divisors (34163397044).

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

31430324044 is a wasteful number, since it uses less digits than its factorization.

31430324044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48804885 (or 48804883 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 31430324044 its reverse (44042303413), we get a palindrome (75472627457).

It can be divided in two parts, 3143032 and 4044, that added together give a square (3147076 = 1774²).

The spelling of 31430324044 in words is "thirty-one billion, four hundred thirty million, three hundred twenty-four thousand, forty-four".