21323232312 has 64 divisors (see below), whose sum is σ = 55291140000. Its totient is φ = 6847142400.

The previous prime is 21323232299. The next prime is 21323232313.

21323232312 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21323232313) 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, 29187 + ... + 208562.

Almost surely, 2^21323232312 is an apocalyptic number.

It is an amenable number.

21323232312 is an abundant number, since it is smaller than the sum of its proper divisors (33967907688).

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

21323232312 is a wasteful number, since it uses less digits than its factorization.

21323232312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237896 (or 237892 counting only the distinct ones).

The product of its digits is 2592, while the sum is 24.

The spelling of 21323232312 in words is "twenty-one billion, three hundred twenty-three million, two hundred thirty-two thousand, three hundred twelve".