231334417 has 2 divisors, whose sum is σ = 231334418. Its totient is φ = 231334416.

The previous prime is 231334403. The next prime is 231334429. The reversal of 231334417 is 714433132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 231313681 + 20736 = 15209^2 + 144^2 .

It is a cyclic number.

It is not a de Polignac number, because 231334417 - 2⁷ = 231334289 is a prime.

It is a super-2 number, since 2×231334417² = 107031224977459778, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (231334717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115667208 + 115667209.

It is an arithmetic number, because the mean of its divisors is an integer number (115667209).

Almost surely, 2^231334417 is an apocalyptic number.

It is an amenable number.

231334417 is a deficient number, since it is larger than the sum of its proper divisors (1).

231334417 is an equidigital number, since it uses as much as digits as its factorization.

231334417 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6048, while the sum is 28.

The square root of 231334417 is about 15209.6816863470. The cubic root of 231334417 is about 613.8751925832.

Adding to 231334417 its reverse (714433132), we get a palindrome (945767549).

The spelling of 231334417 in words is "two hundred thirty-one million, three hundred thirty-four thousand, four hundred seventeen".