23690543 has 2 divisors, whose sum is σ = 23690544. Its totient is φ = 23690542.

The previous prime is 23690521. The next prime is 23690567. The reversal of 23690543 is 34509632.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23690543 - 2¹² = 23686447 is a prime.

It is a super-2 number, since 2×23690543² = 1122483655269698, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23690573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11845271 + 11845272.

It is an arithmetic number, because the mean of its divisors is an integer number (11845272).

Almost surely, 2^23690543 is an apocalyptic number.

23690543 is a deficient number, since it is larger than the sum of its proper divisors (1).

23690543 is an equidigital number, since it uses as much as digits as its factorization.

23690543 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19440, while the sum is 32.

The square root of 23690543 is about 4867.2931902650. The cubic root of 23690543 is about 287.2047853101.

The spelling of 23690543 in words is "twenty-three million, six hundred ninety thousand, five hundred forty-three".