490549231 has 2 divisors, whose sum is σ = 490549232. Its totient is φ = 490549230.

The previous prime is 490549217. The next prime is 490549271. The reversal of 490549231 is 132945094.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-490549231 is a prime.

It is a super-2 number, since 2×490549231² = 481277096069382722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (490549271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245274615 + 245274616.

It is an arithmetic number, because the mean of its divisors is an integer number (245274616).

Almost surely, 2^490549231 is an apocalyptic number.

490549231 is a deficient number, since it is larger than the sum of its proper divisors (1).

490549231 is an equidigital number, since it uses as much as digits as its factorization.

490549231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 490549231 is about 22148.3460104812. The cubic root of 490549231 is about 788.6679635863.

It can be divided in two parts, 49054 and 9231, that added together give a palindrome (58285).

The spelling of 490549231 in words is "four hundred ninety million, five hundred forty-nine thousand, two hundred thirty-one".