31230000032 has 96 divisors (see below), whose sum is σ = 76699405440. Its totient is φ = 12160558080.

The previous prime is 31230000017. The next prime is 31230000041. The reversal of 31230000032 is 23000003213.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 31229999971 and 31230000016.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7165598 + ... + 7169954.

It is an arithmetic number, because the mean of its divisors is an integer number (798952140).

Almost surely, 2^31230000032 is an apocalyptic number.

31230000032 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31230000032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38349702720).

31230000032 is an abundant number, since it is smaller than the sum of its proper divisors (45469405408).

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

31230000032 is a wasteful number, since it uses less digits than its factorization.

31230000032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7294 (or 7286 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 14.

Adding to 31230000032 its reverse (23000003213), we get a palindrome (54230003245).

The spelling of 31230000032 in words is "thirty-one billion, two hundred thirty million, thirty-two", and thus it is an aban number.