491092831 has 2 divisors, whose sum is σ = 491092832. Its totient is φ = 491092830.

The previous prime is 491092783. The next prime is 491092853. The reversal of 491092831 is 138290194.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 491092831 - 2¹⁷ = 490961759 is a prime.

It is a super-2 number, since 2×491092831² = 482344337319189122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (491092891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245546415 + 245546416.

It is an arithmetic number, because the mean of its divisors is an integer number (245546416).

Almost surely, 2^491092831 is an apocalyptic number.

491092831 is a deficient number, since it is larger than the sum of its proper divisors (1).

491092831 is an equidigital number, since it uses as much as digits as its factorization.

491092831 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 491092831 is about 22160.6144093525. The cubic root of 491092831 is about 788.9591757039.

The spelling of 491092831 in words is "four hundred ninety-one million, ninety-two thousand, eight hundred thirty-one".