21310302332 has 48 divisors (see below), whose sum is σ = 44949364992. Its totient is φ = 8720321280.

The previous prime is 21310302241. The next prime is 21310302389. The reversal of 21310302332 is 23320301312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 602138 + ... + 636545.

It is an arithmetic number, because the mean of its divisors is an integer number (936445104).

Almost surely, 2^21310302332 is an apocalyptic number.

21310302332 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21310302332 is an abundant number, since it is smaller than the sum of its proper divisors (23639062660).

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

21310302332 is a wasteful number, since it uses less digits than its factorization.

21310302332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1238738 (or 1238736 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 21310302332 its reverse (23320301312), we get a palindrome (44630603644).

The spelling of 21310302332 in words is "twenty-one billion, three hundred ten million, three hundred two thousand, three hundred thirty-two".