23163331 has 2 divisors, whose sum is σ = 23163332. Its totient is φ = 23163330.

The previous prime is 23163311. The next prime is 23163359. The reversal of 23163331 is 13336132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23163331 - 2¹¹ = 23161283 is a prime.

It is a super-2 number, since 2×23163331² = 1073079806031122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (23163311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11581665 + 11581666.

It is an arithmetic number, because the mean of its divisors is an integer number (11581666).

Almost surely, 2^23163331 is an apocalyptic number.

23163331 is a deficient number, since it is larger than the sum of its proper divisors (1).

23163331 is an equidigital number, since it uses as much as digits as its factorization.

23163331 is an evil number, because the sum of its binary digits is even.

The product of its digits is 972, while the sum is 22.

The square root of 23163331 is about 4812.8298328530. The cubic root of 23163331 is about 285.0582870423.

Adding to 23163331 its reverse (13336132), we get a palindrome (36499463).

The spelling of 23163331 in words is "twenty-three million, one hundred sixty-three thousand, three hundred thirty-one".