117942031 has 2 divisors, whose sum is σ = 117942032. Its totient is φ = 117942030.

The previous prime is 117942029. The next prime is 117942049. The reversal of 117942031 is 130249711.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 117942031 - 2¹ = 117942029 is a prime.

It is a super-2 number, since 2×117942031² = 27820645352809922, which contains 22 as substring.

Together with 117942029, it forms a pair of twin primes.

It is equal to p_6731128 and since 117942031 and 6731128 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117942001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58971015 + 58971016.

It is an arithmetic number, because the mean of its divisors is an integer number (58971016).

Almost surely, 2^117942031 is an apocalyptic number.

117942031 is a deficient number, since it is larger than the sum of its proper divisors (1).

117942031 is an equidigital number, since it uses as much as digits as its factorization.

117942031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 117942031 is about 10860.1119239168. Note that the first 3 decimals coincide. The cubic root of 117942031 is about 490.4064807022.

The spelling of 117942031 in words is "one hundred seventeen million, nine hundred forty-two thousand, thirty-one".