20312232000 has 112 divisors (see below), whose sum is σ = 67071069312. Its totient is φ = 5416588800.

The previous prime is 20312231993. The next prime is 20312232001. The reversal of 20312232000 is 23221302.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (20312232001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 399172 + ... + 447171.

Almost surely, 2^20312232000 is an apocalyptic number.

20312232000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20312232000 is an abundant number, since it is smaller than the sum of its proper divisors (46758837312).

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

20312232000 is an equidigital number, since it uses as much as digits as its factorization.

20312232000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 846373 (or 846353 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

Adding to 20312232000 its reverse (23221302), we get a palindrome (20335453302).

The spelling of 20312232000 in words is "twenty billion, three hundred twelve million, two hundred thirty-two thousand".