21232323024 has 60 divisors (see below), whose sum is σ = 60289870368. Its totient is φ = 6434035520.

The previous prime is 21232323023. The next prime is 21232323037. The reversal of 21232323024 is 42032323212.

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

It is a junction number, because it is equal to n+sod(n) for n = 21232322985 and 21232323003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21232323023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1822044 + ... + 1833659.

Almost surely, 2^21232323024 is an apocalyptic number.

21232323024 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

21232323024 is an abundant number, since it is smaller than the sum of its proper divisors (39057547344).

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

21232323024 is a wasteful number, since it uses less digits than its factorization.

21232323024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3655736 (or 3655719 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 24.

Adding to 21232323024 its reverse (42032323212), we get a palindrome (63264646236).

The spelling of 21232323024 in words is "twenty-one billion, two hundred thirty-two million, three hundred twenty-three thousand, twenty-four".