117227731 has 4 divisors (see below), whose sum is σ = 118150912. Its totient is φ = 116304552.

The previous prime is 117227717. The next prime is 117227743. The reversal of 117227731 is 137722711.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 117227731 - 2⁹ = 117227219 is a prime.

It is a super-2 number, since 2×117227731² = 27484681830816722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 117227693 and 117227702.

It is not an unprimeable number, because it can be changed into a prime (117227791) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 461400 + ... + 461653.

It is an arithmetic number, because the mean of its divisors is an integer number (29537728).

Almost surely, 2^117227731 is an apocalyptic number.

117227731 is a deficient number, since it is larger than the sum of its proper divisors (923181).

117227731 is an equidigital number, since it uses as much as digits as its factorization.

117227731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 923180.

The product of its digits is 4116, while the sum is 31.

The square root of 117227731 is about 10827.1755781459. The cubic root of 117227731 is about 489.4144483977.

The spelling of 117227731 in words is "one hundred seventeen million, two hundred twenty-seven thousand, seven hundred thirty-one".