23135405 has 8 divisors (see below), whose sum is σ = 27933792. Its totient is φ = 18394128.

The previous prime is 23135389. The next prime is 23135443. The reversal of 23135405 is 50453132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23135405 - 2⁴ = 23135389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13379 + ... + 15008.

It is an arithmetic number, because the mean of its divisors is an integer number (3491724).

Almost surely, 2^23135405 is an apocalyptic number.

It is an amenable number.

23135405 is a deficient number, since it is larger than the sum of its proper divisors (4798387).

23135405 is a wasteful number, since it uses less digits than its factorization.

23135405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28555.

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

The square root of 23135405 is about 4809.9277541352. The cubic root of 23135405 is about 284.9436843689.

Adding to 23135405 its reverse (50453132), we get a palindrome (73588537).

The spelling of 23135405 in words is "twenty-three million, one hundred thirty-five thousand, four hundred five".