117631 has 4 divisors (see below), whose sum is σ = 119200. Its totient is φ = 116064.

The previous prime is 117619. The next prime is 117643. The reversal of 117631 is 136711.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (117619) and next prime (117643).

It is a cyclic number.

It is not a de Polignac number, because 117631 - 2⁷ = 117503 is a prime.

It is a super-2 number, since 2×117631² = 27674104322, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 8.

It is a nialpdrome in base 7.

It is a junction number, because it is equal to n+sod(n) for n = 117599 and 117608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 666 + ... + 823.

It is an arithmetic number, because the mean of its divisors is an integer number (29800).

2¹¹⁷⁶³¹ is an apocalyptic number.

117631 is a deficient number, since it is larger than the sum of its proper divisors (1569).

117631 is an equidigital number, since it uses as much as digits as its factorization.

117631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1568.

The product of its digits is 126, while the sum is 19.

The square root of 117631 is about 342.9737599292. The cubic root of 117631 is about 48.9975009138.

The spelling of 117631 in words is "one hundred seventeen thousand, six hundred thirty-one".