231225751 has 2 divisors, whose sum is σ = 231225752. Its totient is φ = 231225750.

The previous prime is 231225737. The next prime is 231225767. The reversal of 231225751 is 157522132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 231225751 - 2⁵ = 231225719 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231225791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115612875 + 115612876.

It is an arithmetic number, because the mean of its divisors is an integer number (115612876).

Almost surely, 2^231225751 is an apocalyptic number.

231225751 is a deficient number, since it is larger than the sum of its proper divisors (1).

231225751 is an equidigital number, since it uses as much as digits as its factorization.

231225751 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4200, while the sum is 28.

The square root of 231225751 is about 15206.1090026344. The cubic root of 231225751 is about 613.7790578616.

Adding to 231225751 its reverse (157522132), we get a palindrome (388747883).

The spelling of 231225751 in words is "two hundred thirty-one million, two hundred twenty-five thousand, seven hundred fifty-one".