23013215189 has 2 divisors, whose sum is σ = 23013215190. Its totient is φ = 23013215188.

The previous prime is 23013215143. The next prime is 23013215221. The reversal of 23013215189 is 98151231032.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15629250289 + 7383964900 = 125017^2 + 85930^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23013215189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23013215989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11506607594 + 11506607595.

It is an arithmetic number, because the mean of its divisors is an integer number (11506607595).

Almost surely, 2^23013215189 is an apocalyptic number.

It is an amenable number.

23013215189 is a deficient number, since it is larger than the sum of its proper divisors (1).

23013215189 is an equidigital number, since it uses as much as digits as its factorization.

23013215189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 35.

The spelling of 23013215189 in words is "twenty-three billion, thirteen million, two hundred fifteen thousand, one hundred eighty-nine".