231458497 has 2 divisors, whose sum is σ = 231458498. Its totient is φ = 231458496.

The previous prime is 231458471. The next prime is 231458561. The reversal of 231458497 is 794854132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 147112641 + 84345856 = 12129^2 + 9184^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231458497 is a prime.

It is not a weakly prime, because it can be changed into another prime (231458467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115729248 + 115729249.

It is an arithmetic number, because the mean of its divisors is an integer number (115729249).

Almost surely, 2^231458497 is an apocalyptic number.

It is an amenable number.

231458497 is a deficient number, since it is larger than the sum of its proper divisors (1).

231458497 is an equidigital number, since it uses as much as digits as its factorization.

231458497 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 241920, while the sum is 43.

The square root of 231458497 is about 15213.7601203647. The cubic root of 231458497 is about 613.9849269678.

The spelling of 231458497 in words is "two hundred thirty-one million, four hundred fifty-eight thousand, four hundred ninety-seven".