21342320232 has 32 divisors (see below), whose sum is σ = 53372558880. Its totient is φ = 7111872320.

The previous prime is 21342320213. The next prime is 21342320257. The reversal of 21342320232 is 23202324312.

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

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60738 + ... + 215345.

It is an arithmetic number, because the mean of its divisors is an integer number (1667892465).

Almost surely, 2^21342320232 is an apocalyptic number.

It is an amenable number.

21342320232 is an abundant number, since it is smaller than the sum of its proper divisors (32030238648).

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

21342320232 is a wasteful number, since it uses less digits than its factorization.

21342320232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279313 (or 279309 counting only the distinct ones).

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

Adding to 21342320232 its reverse (23202324312), we get a palindrome (44544644544).

The spelling of 21342320232 in words is "twenty-one billion, three hundred forty-two million, three hundred twenty thousand, two hundred thirty-two".