31430444332 has 12 divisors (see below), whose sum is σ = 62860888720. Its totient is φ = 13470190416.

The previous prime is 31430444317. The next prime is 31430444333. The reversal of 31430444332 is 23344403413.

31430444332 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 31430444294 and 31430444303.

It is not an unprimeable number, because it can be changed into a prime (31430444333) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 561257907 + ... + 561257962.

Almost surely, 2^31430444332 is an apocalyptic number.

It is an amenable number.

31430444332 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

31430444332 is a wasteful number, since it uses less digits than its factorization.

31430444332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1122515880 (or 1122515878 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 31.

Adding to 31430444332 its reverse (23344403413), we get a palindrome (54774847745).

The spelling of 31430444332 in words is "thirty-one billion, four hundred thirty million, four hundred forty-four thousand, three hundred thirty-two".