23020013 has 2 divisors, whose sum is σ = 23020014. Its totient is φ = 23020012.

The previous prime is 23020009. The next prime is 23020051. The reversal of 23020013 is 31002032.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17322244 + 5697769 = 4162^2 + 2387^2 .

It is a cyclic number.

It is not a de Polignac number, because 23020013 - 2² = 23020009 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23019976 and 23020003.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23070013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11510006 + 11510007.

It is an arithmetic number, because the mean of its divisors is an integer number (11510007).

Almost surely, 2^23020013 is an apocalyptic number.

It is an amenable number.

23020013 is a deficient number, since it is larger than the sum of its proper divisors (1).

23020013 is an equidigital number, since it uses as much as digits as its factorization.

23020013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 11.

The square root of 23020013 is about 4797.9175691127. The cubic root of 23020013 is about 284.4691585797.

Adding to 23020013 its reverse (31002032), we get a palindrome (54022045).

The spelling of 23020013 in words is "twenty-three million, twenty thousand, thirteen".