23530531289 has 2 divisors, whose sum is σ = 23530531290. Its totient is φ = 23530531288.

The previous prime is 23530531273. The next prime is 23530531303. The reversal of 23530531289 is 98213503532.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14133167689 + 9397363600 = 118883^2 + 96940^2 .

It is a cyclic number.

It is not a de Polignac number, because 23530531289 - 2⁴ = 23530531273 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (23530531259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11765265644 + 11765265645.

It is an arithmetic number, because the mean of its divisors is an integer number (11765265645).

Almost surely, 2^23530531289 is an apocalyptic number.

It is an amenable number.

23530531289 is a deficient number, since it is larger than the sum of its proper divisors (1).

23530531289 is an equidigital number, since it uses as much as digits as its factorization.

23530531289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 194400, while the sum is 41.

The spelling of 23530531289 in words is "twenty-three billion, five hundred thirty million, five hundred thirty-one thousand, two hundred eighty-nine".