316049081 has 2 divisors, whose sum is σ = 316049082. Its totient is φ = 316049080.

The previous prime is 316049077. The next prime is 316049089. The reversal of 316049081 is 180940613.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 242861056 + 73188025 = 15584^2 + 8555^2 .

It is a cyclic number.

It is not a de Polignac number, because 316049081 - 2² = 316049077 is a prime.

It is a super-2 number, since 2×316049081² = 199774043201889122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (316049089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158024540 + 158024541.

It is an arithmetic number, because the mean of its divisors is an integer number (158024541).

Almost surely, 2^316049081 is an apocalyptic number.

It is an amenable number.

316049081 is a deficient number, since it is larger than the sum of its proper divisors (1).

316049081 is an equidigital number, since it uses as much as digits as its factorization.

316049081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 316049081 is about 17777.7692920119. The cubic root of 316049081 is about 681.1637231479.

Adding to 316049081 its reverse (180940613), we get a palindrome (496989694).

The spelling of 316049081 in words is "three hundred sixteen million, forty-nine thousand, eighty-one".