23290143 has 16 divisors (see below), whose sum is σ = 33062400. Its totient is φ = 14541120.

The previous prime is 23290129. The next prime is 23290147. The reversal of 23290143 is 34109232.

It is not a de Polignac number, because 23290143 - 2⁸ = 23289887 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23290147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2778 + ... + 7368.

It is an arithmetic number, because the mean of its divisors is an integer number (2066400).

Almost surely, 2^23290143 is an apocalyptic number.

23290143 is a deficient number, since it is larger than the sum of its proper divisors (9772257).

23290143 is a wasteful number, since it uses less digits than its factorization.

23290143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4702.

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 23290143 is about 4825.9862204528. The cubic root of 23290143 is about 285.5775422910.

Adding to 23290143 its reverse (34109232), we get a palindrome (57399375).

The spelling of 23290143 in words is "twenty-three million, two hundred ninety thousand, one hundred forty-three".