23251331 has 2 divisors, whose sum is σ = 23251332. Its totient is φ = 23251330.

The previous prime is 23251313. The next prime is 23251343. The reversal of 23251331 is 13315232.

Together with previous prime (23251313) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23251331 is a prime.

It is a super-2 number, since 2×23251331² = 1081248786543122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (23251381) 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, 11625665 + 11625666.

It is an arithmetic number, because the mean of its divisors is an integer number (11625666).

Almost surely, 2^23251331 is an apocalyptic number.

23251331 is a deficient number, since it is larger than the sum of its proper divisors (1).

23251331 is an equidigital number, since it uses as much as digits as its factorization.

23251331 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 540, while the sum is 20.

The square root of 23251331 is about 4821.9633967918. The cubic root of 23251331 is about 285.4188199481.

Adding to 23251331 its reverse (13315232), we get a palindrome (36566563).

The spelling of 23251331 in words is "twenty-three million, two hundred fifty-one thousand, three hundred thirty-one".