117356431 has 2 divisors, whose sum is σ = 117356432. Its totient is φ = 117356430.

The previous prime is 117356429. The next prime is 117356443. The reversal of 117356431 is 134653711.

It is a weak prime.

It is an emirp because it is prime and its reverse (134653711) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 117356431 - 2¹ = 117356429 is a prime.

It is a super-2 number, since 2×117356431² = 27545063794115522, which contains 22 as substring.

Together with 117356429, 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 = 117356393 and 117356402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117356461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58678215 + 58678216.

It is an arithmetic number, because the mean of its divisors is an integer number (58678216).

Almost surely, 2^117356431 is an apocalyptic number.

117356431 is a deficient number, since it is larger than the sum of its proper divisors (1).

117356431 is an equidigital number, since it uses as much as digits as its factorization.

117356431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7560, while the sum is 31.

The square root of 117356431 is about 10833.1173260516. The cubic root of 117356431 is about 489.5934862483.

The spelling of 117356431 in words is "one hundred seventeen million, three hundred fifty-six thousand, four hundred thirty-one".