232220257 has 2 divisors, whose sum is σ = 232220258. Its totient is φ = 232220256.

The previous prime is 232220207. The next prime is 232220273. The reversal of 232220257 is 752022232.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 196028001 + 36192256 = 14001^2 + 6016^2 .

It is a cyclic number.

It is not a de Polignac number, because 232220257 - 2¹⁹ = 231695969 is a prime.

It is a super-2 number, since 2×232220257² = 107852495522292098, which contains 22 as substring.

It is a nialpdrome in base 16.

It is not a weakly prime, because it can be changed into another prime (232220207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 116110128 + 116110129.

It is an arithmetic number, because the mean of its divisors is an integer number (116110129).

Almost surely, 2^232220257 is an apocalyptic number.

It is an amenable number.

232220257 is a deficient number, since it is larger than the sum of its proper divisors (1).

232220257 is an equidigital number, since it uses as much as digits as its factorization.

232220257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3360, while the sum is 25.

The square root of 232220257 is about 15238.7747867078. The cubic root of 232220257 is about 614.6577574506.

Adding to 232220257 its reverse (752022232), we get a palindrome (984242489).

The spelling of 232220257 in words is "two hundred thirty-two million, two hundred twenty thousand, two hundred fifty-seven".