116431 has 4 divisors (see below), whose sum is σ = 133072. Its totient is φ = 99792.

The previous prime is 116423. The next prime is 116437. The reversal of 116431 is 134611.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 134611 = 227 ⋅593.

It is not a de Polignac number, because 116431 - 2³ = 116423 is a prime.

It is a super-2 number, since 2×116431² = 27112355522, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

116431 is a lucky number.

It is a nialpdrome in base 7.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (116437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8310 + ... + 8323.

It is an arithmetic number, because the mean of its divisors is an integer number (33268).

2¹¹⁶⁴³¹ is an apocalyptic number.

116431 is a deficient number, since it is larger than the sum of its proper divisors (16641).

116431 is an equidigital number, since it uses as much as digits as its factorization.

116431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16640.

The product of its digits is 72, while the sum is 16.

The square root of 116431 is about 341.2198704648. The cubic root of 116431 is about 48.8303168691.

The spelling of 116431 in words is "one hundred sixteen thousand, four hundred thirty-one".