117123137 has 2 divisors, whose sum is σ = 117123138. Its totient is φ = 117123136.

The previous prime is 117123121. The next prime is 117123151. The reversal of 117123137 is 731321711.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 58997761 + 58125376 = 7681^2 + 7624^2 .

It is a cyclic number.

It is not a de Polignac number, because 117123137 - 2⁴ = 117123121 is a prime.

It is not a weakly prime, because it can be changed into another prime (117123187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58561568 + 58561569.

It is an arithmetic number, because the mean of its divisors is an integer number (58561569).

Almost surely, 2^117123137 is an apocalyptic number.

It is an amenable number.

117123137 is a deficient number, since it is larger than the sum of its proper divisors (1).

117123137 is an equidigital number, since it uses as much as digits as its factorization.

117123137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 882, while the sum is 26.

The square root of 117123137 is about 10822.3443393749. The cubic root of 117123137 is about 489.2688484722.

Adding to 117123137 its reverse (731321711), we get a palindrome (848444848).

The spelling of 117123137 in words is "one hundred seventeen million, one hundred twenty-three thousand, one hundred thirty-seven".