23231161 has 2 divisors, whose sum is σ = 23231162. Its totient is φ = 23231160.

The previous prime is 23231149. The next prime is 23231171. The reversal of 23231161 is 16113232.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19053225 + 4177936 = 4365^2 + 2044^2 .

It is a cyclic number.

It is not a de Polignac number, because 23231161 - 2¹⁷ = 23100089 is a prime.

It is not a weakly prime, because it can be changed into another prime (23231141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11615580 + 11615581.

It is an arithmetic number, because the mean of its divisors is an integer number (11615581).

Almost surely, 2^23231161 is an apocalyptic number.

It is an amenable number.

23231161 is a deficient number, since it is larger than the sum of its proper divisors (1).

23231161 is an equidigital number, since it uses as much as digits as its factorization.

23231161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 216, while the sum is 19.

The square root of 23231161 is about 4819.8714713154. The cubic root of 23231161 is about 285.3362646303.

Adding to 23231161 its reverse (16113232), we get a palindrome (39344393).

It can be divided in two parts, 2323 and 1161, that multiplied together give a triangular number (2697003 = T₂₃₂₂).

The spelling of 23231161 in words is "twenty-three million, two hundred thirty-one thousand, one hundred sixty-one".