494240231 has 2 divisors, whose sum is σ = 494240232. Its totient is φ = 494240230.

The previous prime is 494240213. The next prime is 494240251. The reversal of 494240231 is 132042494.

Together with previous prime (494240213) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-494240231 is a prime.

It is a super-2 number, since 2×494240231² = 488546811877866722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 494240194 and 494240203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (494240251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247120115 + 247120116.

It is an arithmetic number, because the mean of its divisors is an integer number (247120116).

Almost surely, 2^494240231 is an apocalyptic number.

494240231 is a deficient number, since it is larger than the sum of its proper divisors (1).

494240231 is an equidigital number, since it uses as much as digits as its factorization.

494240231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 494240231 is about 22231.5143658726. The cubic root of 494240231 is about 790.6410600684.

The spelling of 494240231 in words is "four hundred ninety-four million, two hundred forty thousand, two hundred thirty-one".