21313303032 has 48 divisors (see below), whose sum is σ = 61982568360. Its totient is φ = 6089514816.

The previous prime is 21313303021. The next prime is 21313303049. The reversal of 21313303032 is 23030331312.

It is a super-2 number, since 2×21313303032² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9060603 + ... + 9062954.

Almost surely, 2^21313303032 is an apocalyptic number.

It is an amenable number.

21313303032 is an abundant number, since it is smaller than the sum of its proper divisors (40669265328).

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

21313303032 is a wasteful number, since it uses less digits than its factorization.

21313303032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18123580 (or 18123569 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 21.

Adding to 21313303032 its reverse (23030331312), we get a palindrome (44343634344).

The spelling of 21313303032 in words is "twenty-one billion, three hundred thirteen million, three hundred three thousand, thirty-two".