23128951 has 2 divisors, whose sum is σ = 23128952. Its totient is φ = 23128950.

The previous prime is 23128907. The next prime is 23128981. The reversal of 23128951 is 15982132.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23128951 - 2¹¹ = 23126903 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23128901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11564475 + 11564476.

It is an arithmetic number, because the mean of its divisors is an integer number (11564476).

Almost surely, 2^23128951 is an apocalyptic number.

23128951 is a deficient number, since it is larger than the sum of its proper divisors (1).

23128951 is an equidigital number, since it uses as much as digits as its factorization.

23128951 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4320, while the sum is 31.

The square root of 23128951 is about 4809.2568032909. The cubic root of 23128951 is about 284.9171853360.

The spelling of 23128951 in words is "twenty-three million, one hundred twenty-eight thousand, nine hundred fifty-one".