21310023233013 has 16 divisors (see below), whose sum is σ = 28583923286016. Its totient is φ = 14121405162800.

The previous prime is 21310023232999. The next prime is 21310023233029. The reversal of 21310023233013 is 31033232001312.

It is a cyclic number.

It is not a de Polignac number, because 21310023233013 - 2¹⁸ = 21310022970869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21310023233813) 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, 38780620 + ... + 39326282.

It is an arithmetic number, because the mean of its divisors is an integer number (1786495205376).

Almost surely, 2^{21310023233013} is an apocalyptic number.

It is an amenable number.

21310023233013 is a deficient number, since it is larger than the sum of its proper divisors (7273900053003).

21310023233013 is a wasteful number, since it uses less digits than its factorization.

21310023233013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 623784.

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 21310023233013 its reverse (31033232001312), we get a palindrome (52343255234325).

The spelling of 21310023233013 in words is "twenty-one trillion, three hundred ten billion, twenty-three million, two hundred thirty-three thousand, thirteen".