116931 has 4 divisors (see below), whose sum is σ = 155912. Its totient is φ = 77952.

The previous prime is 116929. The next prime is 116933. The reversal of 116931 is 139611.

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 (116929) and next prime (116933).

It is not a de Polignac number, because 116931 - 2¹ = 116929 is a prime.

It is a super-2 number, since 2×116931² = 27345717522, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

116931 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 116898 and 116907.

It is not an unprimeable number, because it can be changed into a prime (116933) 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, 19486 + ... + 19491.

It is an arithmetic number, because the mean of its divisors is an integer number (38978).

2¹¹⁶⁹³¹ is an apocalyptic number.

116931 is a deficient number, since it is larger than the sum of its proper divisors (38981).

116931 is an equidigital number, since it uses as much as digits as its factorization.

116931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38980.

The product of its digits is 162, while the sum is 21.

The square root of 116931 is about 341.9517509825. The cubic root of 116931 is about 48.9001158407.

The spelling of 116931 in words is "one hundred sixteen thousand, nine hundred thirty-one".