31223300032 has 28 divisors (see below), whose sum is σ = 64652597136. Its totient is φ = 14932881920.

The previous prime is 31223300029. The next prime is 31223300033. The reversal of 31223300032 is 23000332213.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 31223299982 and 31223300009.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31223300033) 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, 10604269 + ... + 10607212.

Almost surely, 2^31223300032 is an apocalyptic number.

31223300032 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

31223300032 is an abundant number, since it is smaller than the sum of its proper divisors (33429297104).

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

31223300032 is a wasteful number, since it uses less digits than its factorization.

31223300032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21211516 (or 21211506 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 19.

Adding to 31223300032 its reverse (23000332213), we get a palindrome (54223632245).

The spelling of 31223300032 in words is "thirty-one billion, two hundred twenty-three million, three hundred thousand, thirty-two".