23917403 has 2 divisors, whose sum is σ = 23917404. Its totient is φ = 23917402.

The previous prime is 23917381. The next prime is 23917451. The reversal of 23917403 is 30471932.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23917403 - 2¹⁸ = 23655259 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (23917703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11958701 + 11958702.

It is an arithmetic number, because the mean of its divisors is an integer number (11958702).

Almost surely, 2^23917403 is an apocalyptic number.

23917403 is a deficient number, since it is larger than the sum of its proper divisors (1).

23917403 is an equidigital number, since it uses as much as digits as its factorization.

23917403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 23917403 is about 4890.5421989796. The cubic root of 23917403 is about 288.1186295946.

The spelling of 23917403 in words is "twenty-three million, nine hundred seventeen thousand, four hundred three".