231010289 has 2 divisors, whose sum is σ = 231010290. Its totient is φ = 231010288.

The previous prime is 231010279. The next prime is 231010291. The reversal of 231010289 is 982010132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 184497889 + 46512400 = 13583^2 + 6820^2 .

It is a cyclic number.

It is not a de Polignac number, because 231010289 - 2²⁴ = 214233073 is a prime.

Together with 231010291, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (231010279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115505144 + 115505145.

It is an arithmetic number, because the mean of its divisors is an integer number (115505145).

Almost surely, 2^231010289 is an apocalyptic number.

It is an amenable number.

231010289 is a deficient number, since it is larger than the sum of its proper divisors (1).

231010289 is an equidigital number, since it uses as much as digits as its factorization.

231010289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 231010289 is about 15199.0226330511. The cubic root of 231010289 is about 613.5883536677.

The spelling of 231010289 in words is "two hundred thirty-one million, ten thousand, two hundred eighty-nine".