617311117 has 2 divisors, whose sum is σ = 617311118. Its totient is φ = 617311116.

The previous prime is 617311073. The next prime is 617311127. The reversal of 617311117 is 711113716.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 556299396 + 61011721 = 23586^2 + 7811^2 .

It is a cyclic number.

It is not a de Polignac number, because 617311117 - 2⁷ = 617310989 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 (617311127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308655558 + 308655559.

It is an arithmetic number, because the mean of its divisors is an integer number (308655559).

Almost surely, 2^617311117 is an apocalyptic number.

It is an amenable number.

617311117 is a deficient number, since it is larger than the sum of its proper divisors (1).

617311117 is an equidigital number, since it uses as much as digits as its factorization.

617311117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 882, while the sum is 28.

The square root of 617311117 is about 24845.7464568888. The cubic root of 617311117 is about 851.4674154117.

The spelling of 617311117 in words is "six hundred seventeen million, three hundred eleven thousand, one hundred seventeen".