231228583 has 2 divisors, whose sum is σ = 231228584. Its totient is φ = 231228582.

The previous prime is 231228581. The next prime is 231228601. The reversal of 231228583 is 385822132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 231228583 - 2¹ = 231228581 is a prime.

Together with 231228581, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231228581) 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, 115614291 + 115614292.

It is an arithmetic number, because the mean of its divisors is an integer number (115614292).

Almost surely, 2^231228583 is an apocalyptic number.

231228583 is a deficient number, since it is larger than the sum of its proper divisors (1).

231228583 is an equidigital number, since it uses as much as digits as its factorization.

231228583 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23040, while the sum is 34.

The square root of 231228583 is about 15206.2021228182. The cubic root of 231228583 is about 613.7815636598.

The spelling of 231228583 in words is "two hundred thirty-one million, two hundred twenty-eight thousand, five hundred eighty-three".