491320301 has 4 divisors (see below), whose sum is σ = 491918112. Its totient is φ = 490722492.

The previous prime is 491320289. The next prime is 491320309. The reversal of 491320301 is 103023194.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 491320301 - 2²² = 487125997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491320309) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 297671 + ... + 299316.

It is an arithmetic number, because the mean of its divisors is an integer number (122979528).

Almost surely, 2^491320301 is an apocalyptic number.

It is an amenable number.

491320301 is a deficient number, since it is larger than the sum of its proper divisors (597811).

491320301 is an equidigital number, since it uses as much as digits as its factorization.

491320301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 597810.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 491320301 is about 22165.7461187301. The cubic root of 491320301 is about 789.0809699491.

Adding to 491320301 its reverse (103023194), we get a palindrome (594343495).

The spelling of 491320301 in words is "four hundred ninety-one million, three hundred twenty thousand, three hundred one".