117211231 has 2 divisors, whose sum is σ = 117211232. Its totient is φ = 117211230.

The previous prime is 117211177. The next prime is 117211267. The reversal of 117211231 is 132112711.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 117211231 - 2⁷ = 117211103 is a prime.

It is a super-2 number, since 2×117211231² = 27476945345070722, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 117211199 and 117211208.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117211271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58605615 + 58605616.

It is an arithmetic number, because the mean of its divisors is an integer number (58605616).

Almost surely, 2^117211231 is an apocalyptic number.

117211231 is a deficient number, since it is larger than the sum of its proper divisors (1).

117211231 is an equidigital number, since it uses as much as digits as its factorization.

117211231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 84, while the sum is 19.

The square root of 117211231 is about 10826.4135797595. The cubic root of 117211231 is about 489.3914853518.

Adding to 117211231 its reverse (132112711), we get a palindrome (249323942).

It can be divided in two parts, 1172 and 11231, that added together give a triangular number (12403 = T₁₅₇).

The spelling of 117211231 in words is "one hundred seventeen million, two hundred eleven thousand, two hundred thirty-one".