491446031 has 2 divisors, whose sum is σ = 491446032. Its totient is φ = 491446030.

The previous prime is 491446027. The next prime is 491446061. The reversal of 491446031 is 130644194.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 491446031 - 2² = 491446027 is a prime.

It is a super-2 number, since 2×491446031² = 483038402771305922, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (491446061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245723015 + 245723016.

It is an arithmetic number, because the mean of its divisors is an integer number (245723016).

Almost surely, 2^491446031 is an apocalyptic number.

491446031 is a deficient number, since it is larger than the sum of its proper divisors (1).

491446031 is an equidigital number, since it uses as much as digits as its factorization.

491446031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 491446031 is about 22168.5820701280. The cubic root of 491446031 is about 789.1482734228.

The spelling of 491446031 in words is "four hundred ninety-one million, four hundred forty-six thousand, thirty-one".