31012300032 has 144 divisors (see below), whose sum is σ = 94435350912. Its totient is φ = 8850677760.

The previous prime is 31012300009. The next prime is 31012300051. The reversal of 31012300032 is 23000321013.

It is a junction number, because it is equal to n+sod(n) for n = 31012299984 and 31012300020.

It is a congruent number.

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, 5701218 + ... + 5706654.

It is an arithmetic number, because the mean of its divisors is an integer number (655801048).

Almost surely, 2^31012300032 is an apocalyptic number.

31012300032 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 31012300032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47217675456).

31012300032 is an abundant number, since it is smaller than the sum of its proper divisors (63423050880).

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

31012300032 is a wasteful number, since it uses less digits than its factorization.

31012300032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6524 (or 6510 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 15.

Adding to 31012300032 its reverse (23000321013), we get a palindrome (54012621045).

The spelling of 31012300032 in words is "thirty-one billion, twelve million, three hundred thousand, thirty-two".