23400523 has 2 divisors, whose sum is σ = 23400524. Its totient is φ = 23400522.

The previous prime is 23400493. The next prime is 23400529. The reversal of 23400523 is 32500432.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23400523 - 2¹³ = 23392331 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23400523.

It is not a weakly prime, because it can be changed into another prime (23400529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11700261 + 11700262.

It is an arithmetic number, because the mean of its divisors is an integer number (11700262).

Almost surely, 2^23400523 is an apocalyptic number.

23400523 is a deficient number, since it is larger than the sum of its proper divisors (1).

23400523 is an equidigital number, since it uses as much as digits as its factorization.

23400523 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 19.

The square root of 23400523 is about 4837.4087071489. The cubic root of 23400523 is about 286.0279815158.

Adding to 23400523 its reverse (32500432), we get a palindrome (55900955).

Subtracting 23400523 from its reverse (32500432), we obtain a palindrome (9099909).

The spelling of 23400523 in words is "twenty-three million, four hundred thousand, five hundred twenty-three".