394276231 has 2 divisors, whose sum is σ = 394276232. Its totient is φ = 394276230.

The previous prime is 394276229. The next prime is 394276237. The reversal of 394276231 is 132672493.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 394276231 - 2¹ = 394276229 is a prime.

It is a super-2 number, since 2×394276231² = 310907492663130722, which contains 22 as substring.

Together with 394276229, 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 (394276237) 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, 197138115 + 197138116.

It is an arithmetic number, because the mean of its divisors is an integer number (197138116).

Almost surely, 2^394276231 is an apocalyptic number.

394276231 is a deficient number, since it is larger than the sum of its proper divisors (1).

394276231 is an equidigital number, since it uses as much as digits as its factorization.

394276231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54432, while the sum is 37.

The square root of 394276231 is about 19856.3901804935. The cubic root of 394276231 is about 733.2749778404.

It can be divided in two parts, 394276 and 231, that multiplied together give a triangular number (91077756 = T₁₃₄₉₆).

The spelling of 394276231 in words is "three hundred ninety-four million, two hundred seventy-six thousand, two hundred thirty-one".