318138011 has 4 divisors (see below), whose sum is σ = 319312224. Its totient is φ = 316963800.

The previous prime is 318137999. The next prime is 318138013. The reversal of 318138011 is 110831813.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-318138011 is a prime.

It is a super-2 number, since 2×318138011² = 202423588086072242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (318138013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 586700 + ... + 587241.

It is an arithmetic number, because the mean of its divisors is an integer number (79828056).

Almost surely, 2^318138011 is an apocalyptic number.

318138011 is a deficient number, since it is larger than the sum of its proper divisors (1174213).

318138011 is a wasteful number, since it uses less digits than its factorization.

318138011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1174212.

The product of its (nonzero) digits is 576, while the sum is 26.

The square root of 318138011 is about 17836.4237166535. The cubic root of 318138011 is about 682.6611486890.

Adding to 318138011 its reverse (110831813), we get a palindrome (428969824).

The spelling of 318138011 in words is "three hundred eighteen million, one hundred thirty-eight thousand, eleven".