231654457 has 2 divisors, whose sum is σ = 231654458. Its totient is φ = 231654456.

The previous prime is 231654431. The next prime is 231654463. The reversal of 231654457 is 754456132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 142181776 + 89472681 = 11924^2 + 9459^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231654457 is a prime.

It is not a weakly prime, because it can be changed into another prime (231654487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115827228 + 115827229.

It is an arithmetic number, because the mean of its divisors is an integer number (115827229).

Almost surely, 2^231654457 is an apocalyptic number.

It is an amenable number.

231654457 is a deficient number, since it is larger than the sum of its proper divisors (1).

231654457 is an equidigital number, since it uses as much as digits as its factorization.

231654457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 100800, while the sum is 37.

The square root of 231654457 is about 15220.1989803025. The cubic root of 231654457 is about 614.1581510364.

The spelling of 231654457 in words is "two hundred thirty-one million, six hundred fifty-four thousand, four hundred fifty-seven".