23203221312 has 112 divisors (see below), whose sum is σ = 62577146880. Its totient is φ = 7586084352.

The previous prime is 23203221281. The next prime is 23203221319. The reversal of 23203221312 is 21312230232.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23203221319) 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, 3070723 + ... + 3078269.

Almost surely, 2^23203221312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23203221312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31288573440).

23203221312 is an abundant number, since it is smaller than the sum of its proper divisors (39373925568).

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

23203221312 is a wasteful number, since it uses less digits than its factorization.

23203221312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7868 (or 7858 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 23203221312 its reverse (21312230232), we get a palindrome (44515451544).

The spelling of 23203221312 in words is "twenty-three billion, two hundred three million, two hundred twenty-one thousand, three hundred twelve".