23237189 has 2 divisors, whose sum is σ = 23237190. Its totient is φ = 23237188.

The previous prime is 23237183. The next prime is 23237191. The reversal of 23237189 is 98173232.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12888100 + 10349089 = 3590^2 + 3217^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23237189 is a prime.

Together with 23237191, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23237183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11618594 + 11618595.

It is an arithmetic number, because the mean of its divisors is an integer number (11618595).

Almost surely, 2^23237189 is an apocalyptic number.

It is an amenable number.

23237189 is a deficient number, since it is larger than the sum of its proper divisors (1).

23237189 is an equidigital number, since it uses as much as digits as its factorization.

23237189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 35.

The square root of 23237189 is about 4820.4967586339. The cubic root of 23237189 is about 285.3609420920.

The spelling of 23237189 in words is "twenty-three million, two hundred thirty-seven thousand, one hundred eighty-nine".