23251 has 2 divisors, whose sum is σ = 23252. Its totient is φ = 23250.

The previous prime is 23227. The next prime is 23269. The reversal of 23251 is 15232.

23251 = T₁₂₃ + T₁₂₄ + T₁₂₅.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23251 - 2⁹ = 22739 is a prime.

It is a plaindrome in base 12.

It is a nialpdrome in base 13.

It is not a weakly prime, because it can be changed into another prime (23201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11625 + 11626.

It is an arithmetic number, because the mean of its divisors is an integer number (11626).

2²³²⁵¹ is an apocalyptic number.

23251 is the 125-th centered triangular number.

23251 is a deficient number, since it is larger than the sum of its proper divisors (1).

23251 is an equidigital number, since it uses as much as digits as its factorization.

23251 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60, while the sum is 13.

The square root of 23251 is about 152.4827859137. The cubic root of 23251 is about 28.5417465559.

Adding to 23251 its reverse (15232), we get a palindrome (38483).

The spelling of 23251 in words is "twenty-three thousand, two hundred fifty-one".