23143321 has 2 divisors, whose sum is σ = 23143322. Its totient is φ = 23143320.

The previous prime is 23143303. The next prime is 23143333. The reversal of 23143321 is 12334132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19456921 + 3686400 = 4411^2 + 1920^2 .

It is a cyclic number.

It is not a de Polignac number, because 23143321 - 2¹³ = 23135129 is a prime.

It is a super-2 number, since 2×23143321² = 1071226613818082, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (23143301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11571660 + 11571661.

It is an arithmetic number, because the mean of its divisors is an integer number (11571661).

Almost surely, 2^23143321 is an apocalyptic number.

It is an amenable number.

23143321 is a deficient number, since it is larger than the sum of its proper divisors (1).

23143321 is an equidigital number, since it uses as much as digits as its factorization.

23143321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 432, while the sum is 19.

The square root of 23143321 is about 4810.7505651405. The cubic root of 23143321 is about 284.9761793982.

Adding to 23143321 its reverse (12334132), we get a palindrome (35477453).

The spelling of 23143321 in words is "twenty-three million, one hundred forty-three thousand, three hundred twenty-one".