21310102023 has 16 divisors (see below), whose sum is σ = 34181617920. Its totient is φ = 11536295616.

The previous prime is 21310102013. The next prime is 21310102043. The reversal of 21310102023 is 32020101312.

It is not a de Polignac number, because 21310102023 - 2¹⁶ = 21310036487 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21310101993 and 21310102011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21310102003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26703990 + ... + 26704787.

It is an arithmetic number, because the mean of its divisors is an integer number (2136351120).

Almost surely, 2^21310102023 is an apocalyptic number.

21310102023 is a deficient number, since it is larger than the sum of its proper divisors (12871515897).

21310102023 is a wasteful number, since it uses less digits than its factorization.

21310102023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53408806.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 21310102023 its reverse (32020101312), we get a palindrome (53330203335).

The spelling of 21310102023 in words is "twenty-one billion, three hundred ten million, one hundred two thousand, twenty-three".