491655323 has 2 divisors, whose sum is σ = 491655324. Its totient is φ = 491655322.

The previous prime is 491655301. The next prime is 491655349. The reversal of 491655323 is 323556194.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 491655323 - 2²⁶ = 424546459 is a prime.

It is not a weakly prime, because it can be changed into another prime (491655023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245827661 + 245827662.

It is an arithmetic number, because the mean of its divisors is an integer number (245827662).

Almost surely, 2^491655323 is an apocalyptic number.

491655323 is a deficient number, since it is larger than the sum of its proper divisors (1).

491655323 is an equidigital number, since it uses as much as digits as its factorization.

491655323 is an evil number, because the sum of its binary digits is even.

The product of its digits is 97200, while the sum is 38.

The square root of 491655323 is about 22173.3020319482. The cubic root of 491655323 is about 789.2602823174.

The spelling of 491655323 in words is "four hundred ninety-one million, six hundred fifty-five thousand, three hundred twenty-three".