31430031032 has 16 divisors (see below), whose sum is σ = 59144060760. Its totient is φ = 15658281504.

The previous prime is 31430031013. The next prime is 31430031037. The reversal of 31430031032 is 23013003413.

It is a junction number, because it is equal to n+sod(n) for n = 31430030995 and 31430031013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31430031037) 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, 7089398 + ... + 7093829.

Almost surely, 2^31430031032 is an apocalyptic number.

It is an amenable number.

31430031032 is a deficient number, since it is larger than the sum of its proper divisors (27714029728).

31430031032 is a wasteful number, since it uses less digits than its factorization.

31430031032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14183510 (or 14183506 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 31430031032 its reverse (23013003413), we get a palindrome (54443034445).

The spelling of 31430031032 in words is "thirty-one billion, four hundred thirty million, thirty-one thousand, thirty-two".