21310023232304 has 20 divisors (see below), whose sum is σ = 41288528417880. Its totient is φ = 10654919124480.

The previous prime is 21310023232283. The next prime is 21310023232343. The reversal of 21310023232304 is 40323232001312.

It is a happy number.

It is a super-2 number, since 2×21310023232304² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3860609 + ... + 7584480.

It is an arithmetic number, because the mean of its divisors is an integer number (2064426420894).

Almost surely, 2^{21310023232304} is an apocalyptic number.

It is an amenable number.

21310023232304 is a deficient number, since it is larger than the sum of its proper divisors (19978505185576).

21310023232304 is a wasteful number, since it uses less digits than its factorization.

21310023232304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11561468 (or 11561462 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 26.

Adding to 21310023232304 its reverse (40323232001312), we get a palindrome (61633255233616).

The spelling of 21310023232304 in words is "twenty-one trillion, three hundred ten billion, twenty-three million, two hundred thirty-two thousand, three hundred four".