21313002232 has 8 divisors (see below), whose sum is σ = 39961879200. Its totient is φ = 10656501112.

The previous prime is 21313002199. The next prime is 21313002241. The reversal of 21313002232 is 23220031312.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1332062632 + ... + 1332062647.

It is an arithmetic number, because the mean of its divisors is an integer number (4995234900).

Almost surely, 2^21313002232 is an apocalyptic number.

It is an amenable number.

21313002232 is a deficient number, since it is larger than the sum of its proper divisors (18648876968).

21313002232 is a wasteful number, since it uses less digits than its factorization.

21313002232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2664125285 (or 2664125281 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 21313002232 its reverse (23220031312), we get a palindrome (44533033544).

The spelling of 21313002232 in words is "twenty-one billion, three hundred thirteen million, two thousand, two hundred thirty-two".