21310302023320 has 64 divisors (see below), whose sum is σ = 48733268509440. Its totient is φ = 8385091478400.

The previous prime is 21310302023281. The next prime is 21310302023377. The reversal of 21310302023320 is 2332020301312.

It is a junction number, because it is equal to n+sod(n) for n = 21310302023291 and 21310302023300.

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, 7210986 + ... + 9727225.

It is an arithmetic number, because the mean of its divisors is an integer number (761457320460).

Almost surely, 2^{21310302023320} is an apocalyptic number.

21310302023320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21310302023320 is an abundant number, since it is smaller than the sum of its proper divisors (27422966486120).

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

21310302023320 is a wasteful number, since it uses less digits than its factorization.

21310302023320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16938736 (or 16938732 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 21310302023320 its reverse (2332020301312), we get a palindrome (23642322324632).

The spelling of 21310302023320 in words is "twenty-one trillion, three hundred ten billion, three hundred two million, twenty-three thousand, three hundred twenty".