311116061 has 2 divisors, whose sum is σ = 311116062. Its totient is φ = 311116060.

The previous prime is 311116049. The next prime is 311116073. The reversal of 311116061 is 160611113.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (311116049) and next prime (311116073).

It can be written as a sum of positive squares in only one way, i.e., 301543225 + 9572836 = 17365^2 + 3094^2 .

It is a cyclic number.

It is not a de Polignac number, because 311116061 - 2¹⁰ = 311115037 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (311116081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155558030 + 155558031.

It is an arithmetic number, because the mean of its divisors is an integer number (155558031).

Almost surely, 2^311116061 is an apocalyptic number.

It is an amenable number.

311116061 is a deficient number, since it is larger than the sum of its proper divisors (1).

311116061 is an equidigital number, since it uses as much as digits as its factorization.

311116061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 20.

The square root of 311116061 is about 17638.4823893667. The cubic root of 311116061 is about 677.6011647973.

Adding to 311116061 its reverse (160611113), we get a palindrome (471727174).

The spelling of 311116061 in words is "three hundred eleven million, one hundred sixteen thousand, sixty-one".