21310023323030 has 16 divisors (see below), whose sum is σ = 41308660595664. Its totient is φ = 7868316303840.

The previous prime is 21310023323023. The next prime is 21310023323059. The reversal of 21310023323030 is 3032332001312.

It is a junction number, because it is equal to n+sod(n) for n = 21310023322987 and 21310023323005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81961628036 + ... + 81961628295.

It is an arithmetic number, because the mean of its divisors is an integer number (2581791287229).

Almost surely, 2^{21310023323030} is an apocalyptic number.

21310023323030 is a deficient number, since it is larger than the sum of its proper divisors (19998637272634).

21310023323030 is a wasteful number, since it uses less digits than its factorization.

21310023323030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163923256351.

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 21310023323030 its reverse (3032332001312), we get a palindrome (24342355324342).

The spelling of 21310023323030 in words is "twenty-one trillion, three hundred ten billion, twenty-three million, three hundred twenty-three thousand, thirty".