23135869 has 2 divisors, whose sum is σ = 23135870. Its totient is φ = 23135868.

The previous prime is 23135867. The next prime is 23135921. The reversal of 23135869 is 96853132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20115225 + 3020644 = 4485^2 + 1738^2 .

It is a cyclic number.

It is not a de Polignac number, because 23135869 - 2¹ = 23135867 is a prime.

It is a super-3 number, since 3×23135869³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

Together with 23135867, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23135867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11567934 + 11567935.

It is an arithmetic number, because the mean of its divisors is an integer number (11567935).

Almost surely, 2^23135869 is an apocalyptic number.

It is an amenable number.

23135869 is a deficient number, since it is larger than the sum of its proper divisors (1).

23135869 is an equidigital number, since it uses as much as digits as its factorization.

23135869 is an evil number, because the sum of its binary digits is even.

The product of its digits is 38880, while the sum is 37.

The square root of 23135869 is about 4809.9759874660. The cubic root of 23135869 is about 284.9455892845.

It can be divided in two parts, 231 and 35869, that added together give a square (36100 = 190²).

The spelling of 23135869 in words is "twenty-three million, one hundred thirty-five thousand, eight hundred sixty-nine".