23287135 has 4 divisors (see below), whose sum is σ = 27944568. Its totient is φ = 18629704.

The previous prime is 23287129. The next prime is 23287151. The reversal of 23287135 is 53178232.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 23287135 - 2¹³ = 23278943 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23287097 and 23287106.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2328709 + ... + 2328718.

It is an arithmetic number, because the mean of its divisors is an integer number (6986142).

Almost surely, 2^23287135 is an apocalyptic number.

23287135 is a deficient number, since it is larger than the sum of its proper divisors (4657433).

23287135 is an equidigital number, since it uses as much as digits as its factorization.

23287135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4657432.

The product of its digits is 10080, while the sum is 31.

The square root of 23287135 is about 4825.6745642449. The cubic root of 23287135 is about 285.5652473295.

The spelling of 23287135 in words is "twenty-three million, two hundred eighty-seven thousand, one hundred thirty-five".