23405117 has 8 divisors (see below), whose sum is σ = 24270840. Its totient is φ = 22543360.

The previous prime is 23405111. The next prime is 23405119. The reversal of 23405117 is 71150432.

It can be written as a sum of positive squares in 4 ways, for example, as 1819801 + 21585316 = 1349^2 + 4646^2 .

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 23405117 - 2⁴ = 23405101 is a prime.

It is a Duffinian number.

It is a plaindrome in base 11.

It is a junction number, because it is equal to n+sod(n) for n = 23405092 and 23405101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23405111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16517 + ... + 17877.

It is an arithmetic number, because the mean of its divisors is an integer number (3033855).

Almost surely, 2^23405117 is an apocalyptic number.

It is an amenable number.

23405117 is a deficient number, since it is larger than the sum of its proper divisors (865723).

23405117 is a wasteful number, since it uses less digits than its factorization.

23405117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1983.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 23405117 is about 4837.8835248484. The cubic root of 23405117 is about 286.0466980001.

Adding to 23405117 its reverse (71150432), we get a palindrome (94555549).

The spelling of 23405117 in words is "twenty-three million, four hundred five thousand, one hundred seventeen".