21314331232 has 24 divisors (see below), whose sum is σ = 43316223552. Its totient is φ = 10313385600.

The previous prime is 21314331131. The next prime is 21314331253. The reversal of 21314331232 is 23213341312.

It is a junction number, because it is equal to n+sod(n) for n = 21314331197 and 21314331206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10742119 + ... + 10744102.

It is an arithmetic number, because the mean of its divisors is an integer number (1804842648).

Almost surely, 2^21314331232 is an apocalyptic number.

It is an amenable number.

21314331232 is an abundant number, since it is smaller than the sum of its proper divisors (22001892320).

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

21314331232 is a wasteful number, since it uses less digits than its factorization.

21314331232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21486262 (or 21486254 counting only the distinct ones).

The product of its digits is 2592, while the sum is 25.

Adding to 21314331232 its reverse (23213341312), we get a palindrome (44527672544).

The spelling of 21314331232 in words is "twenty-one billion, three hundred fourteen million, three hundred thirty-one thousand, two hundred thirty-two".