231828893 has 2 divisors, whose sum is σ = 231828894. Its totient is φ = 231828892.

The previous prime is 231828859. The next prime is 231828907. The reversal of 231828893 is 398828132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 166978084 + 64850809 = 12922^2 + 8053^2 .

It is a cyclic number.

It is not a de Polignac number, because 231828893 - 2¹⁴ = 231812509 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231828593) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115914446 + 115914447.

It is an arithmetic number, because the mean of its divisors is an integer number (115914447).

Almost surely, 2^231828893 is an apocalyptic number.

It is an amenable number.

231828893 is a deficient number, since it is larger than the sum of its proper divisors (1).

231828893 is an equidigital number, since it uses as much as digits as its factorization.

231828893 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 165888, while the sum is 44.

The square root of 231828893 is about 15225.9283132425. The cubic root of 231828893 is about 614.3122662272.

The spelling of 231828893 in words is "two hundred thirty-one million, eight hundred twenty-eight thousand, eight hundred ninety-three".