231387283 has 2 divisors, whose sum is σ = 231387284. Its totient is φ = 231387282.

The previous prime is 231387281. The next prime is 231387311. The reversal of 231387283 is 382783132.

231387283 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 231387283 - 2¹ = 231387281 is a prime.

Together with 231387281, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (231387281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115693641 + 115693642.

It is an arithmetic number, because the mean of its divisors is an integer number (115693642).

Almost surely, 2^231387283 is an apocalyptic number.

231387283 is a deficient number, since it is larger than the sum of its proper divisors (1).

231387283 is an equidigital number, since it uses as much as digits as its factorization.

231387283 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48384, while the sum is 37.

The square root of 231387283 is about 15211.4194932623. The cubic root of 231387283 is about 613.9219512318.

The spelling of 231387283 in words is "two hundred thirty-one million, three hundred eighty-seven thousand, two hundred eighty-three".