311112073 has 2 divisors, whose sum is σ = 311112074. Its totient is φ = 311112072.

The previous prime is 311112071. The next prime is 311112089. The reversal of 311112073 is 370211113.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 302655609 + 8456464 = 17397^2 + 2908^2 .

It is a cyclic number.

It is not a de Polignac number, because 311112073 - 2¹ = 311112071 is a prime.

Together with 311112071, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 311112073.

It is not a weakly prime, because it can be changed into another prime (311112071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155556036 + 155556037.

It is an arithmetic number, because the mean of its divisors is an integer number (155556037).

Almost surely, 2^311112073 is an apocalyptic number.

It is an amenable number.

311112073 is a deficient number, since it is larger than the sum of its proper divisors (1).

311112073 is an equidigital number, since it uses as much as digits as its factorization.

311112073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 126, while the sum is 19.

The square root of 311112073 is about 17638.3693407299. The cubic root of 311112073 is about 677.5982695380.

Adding to 311112073 its reverse (370211113), we get a palindrome (681323186).

The spelling of 311112073 in words is "three hundred eleven million, one hundred twelve thousand, seventy-three".