394000231 has 2 divisors, whose sum is σ = 394000232. Its totient is φ = 394000230.

The previous prime is 394000219. The next prime is 394000237. The reversal of 394000231 is 132000493.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 394000231 - 2¹⁷ = 393869159 is a prime.

It is a super-2 number, since 2×394000231² = 310472364056106722, which contains 22 as substring.

It is equal to p_21033193 and since 394000231 and 21033193 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (394000237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 197000115 + 197000116.

It is an arithmetic number, because the mean of its divisors is an integer number (197000116).

Almost surely, 2^394000231 is an apocalyptic number.

394000231 is a deficient number, since it is larger than the sum of its proper divisors (1).

394000231 is an equidigital number, since it uses as much as digits as its factorization.

394000231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 394000231 is about 19849.4390600843. The cubic root of 394000231 is about 733.1038362900.

The spelling of 394000231 in words is "three hundred ninety-four million, two hundred thirty-one", and thus it is an aban number.