23540135 has 16 divisors (see below), whose sum is σ = 29213184. Its totient is φ = 18198432.

The previous prime is 23540123. The next prime is 23540137. The reversal of 23540135 is 53104532.

It is a cyclic number.

It is not a de Polignac number, because 23540135 - 2⁶ = 23540071 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23540135.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23540137) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21614 + ... + 22676.

It is an arithmetic number, because the mean of its divisors is an integer number (1825824).

Almost surely, 2^23540135 is an apocalyptic number.

23540135 is a deficient number, since it is larger than the sum of its proper divisors (5673049).

23540135 is a wasteful number, since it uses less digits than its factorization.

23540135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1214.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 23540135 is about 4851.8177006149. The cubic root of 23540135 is about 286.5956865608.

Adding to 23540135 its reverse (53104532), we get a palindrome (76644667).

The spelling of 23540135 in words is "twenty-three million, five hundred forty thousand, one hundred thirty-five".