117338831 has 2 divisors, whose sum is σ = 117338832. Its totient is φ = 117338830.

The previous prime is 117338821. The next prime is 117338833. The reversal of 117338831 is 138833711.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-117338831 is a prime.

It is a super-2 number, since 2×117338831² = 27536802520893122, which contains 22 as substring.

Together with 117338833, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 117338791 and 117338800.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117338833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58669415 + 58669416.

It is an arithmetic number, because the mean of its divisors is an integer number (58669416).

Almost surely, 2^117338831 is an apocalyptic number.

117338831 is a deficient number, since it is larger than the sum of its proper divisors (1).

117338831 is an equidigital number, since it uses as much as digits as its factorization.

117338831 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12096, while the sum is 35.

The square root of 117338831 is about 10832.3049717039. The cubic root of 117338831 is about 489.5690101684.

It can be divided in two parts, 1173 and 38831, that added together give a palindrome (40004).

The spelling of 117338831 in words is "one hundred seventeen million, three hundred thirty-eight thousand, eight hundred thirty-one".