21313232310000 has 100 divisors (see below), whose sum is σ = 68801955757832. Its totient is φ = 5683528608000.

The previous prime is 21313232309989. The next prime is 21313232310011. The reversal of 21313232310000 is 1323231312.

It is an interprime number because it is at equal distance from previous prime (21313232309989) and next prime (21313232310011).

It is a tau number, because it is divible by the number of its divisors (100).

It is a super-2 number, since 2×21313232310000² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 355190539 + ... + 355250538.

Almost surely, 2^{21313232310000} is an apocalyptic number.

21313232310000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21313232310000 is an abundant number, since it is smaller than the sum of its proper divisors (47488723447832).

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

21313232310000 is an equidigital number, since it uses as much as digits as its factorization.

21313232310000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 710441108 (or 710441087 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 21313232310000 its reverse (1323231312), we get a palindrome (21314555541312).

The spelling of 21313232310000 in words is "twenty-one trillion, three hundred thirteen billion, two hundred thirty-two million, three hundred ten thousand".