231927793 has 2 divisors, whose sum is σ = 231927794. Its totient is φ = 231927792.

The previous prime is 231927739. The next prime is 231927799. The reversal of 231927793 is 397729132.

Together with previous prime (231927739) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 214563904 + 17363889 = 14648^2 + 4167^2 .

It is a cyclic number.

It is not a de Polignac number, because 231927793 - 2¹³ = 231919601 is a prime.

It is not a weakly prime, because it can be changed into another prime (231927799) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115963896 + 115963897.

It is an arithmetic number, because the mean of its divisors is an integer number (115963897).

Almost surely, 2^231927793 is an apocalyptic number.

It is an amenable number.

231927793 is a deficient number, since it is larger than the sum of its proper divisors (1).

231927793 is an equidigital number, since it uses as much as digits as its factorization.

231927793 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 142884, while the sum is 43.

The square root of 231927793 is about 15229.1757163676. The cubic root of 231927793 is about 614.3996105969.

The spelling of 231927793 in words is "two hundred thirty-one million, nine hundred twenty-seven thousand, seven hundred ninety-three".