23990143 has 2 divisors, whose sum is σ = 23990144. Its totient is φ = 23990142.

The previous prime is 23990129. The next prime is 23990159. The reversal of 23990143 is 34109932.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23990143 - 2⁹ = 23989631 is a prime.

It is a super-2 number, since 2×23990143² = 1151053922320898, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23990543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11995071 + 11995072.

It is an arithmetic number, because the mean of its divisors is an integer number (11995072).

Almost surely, 2^23990143 is an apocalyptic number.

23990143 is a deficient number, since it is larger than the sum of its proper divisors (1).

23990143 is an equidigital number, since it uses as much as digits as its factorization.

23990143 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 23990143 is about 4897.9733563996. The cubic root of 23990143 is about 288.4104190595.

The spelling of 23990143 in words is "twenty-three million, nine hundred ninety thousand, one hundred forty-three".