23405047 has 2 divisors, whose sum is σ = 23405048. Its totient is φ = 23405046.

The previous prime is 23405027. The next prime is 23405071. The reversal of 23405047 is 74050432.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23405047 - 2²³ = 15016439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23405027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11702523 + 11702524.

It is an arithmetic number, because the mean of its divisors is an integer number (11702524).

Almost surely, 2^23405047 is an apocalyptic number.

23405047 is a deficient number, since it is larger than the sum of its proper divisors (1).

23405047 is an equidigital number, since it uses as much as digits as its factorization.

23405047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3360, while the sum is 25.

The square root of 23405047 is about 4837.8762902745. The cubic root of 23405047 is about 286.0464128305.

Adding to 23405047 its reverse (74050432), we get a palindrome (97455479).

The spelling of 23405047 in words is "twenty-three million, four hundred five thousand, forty-seven".