116831990 has 32 divisors (see below), whose sum is σ = 242914464. Its totient is φ = 39984640.

The previous prime is 116831983. The next prime is 116832011. The reversal of 116831990 is 99138611.

116831990 is nontrivially palindromic in base 16.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29369 + ... + 33108.

It is an arithmetic number, because the mean of its divisors is an integer number (7591077).

Almost surely, 2^116831990 is an apocalyptic number.

116831990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

116831990 is an abundant number, since it is smaller than the sum of its proper divisors (126082474).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

116831990 is a wasteful number, since it uses less digits than its factorization.

116831990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62512.

The product of its (nonzero) digits is 11664, while the sum is 38.

The square root of 116831990 is about 10808.8847713351. The cubic root of 116831990 is about 488.8631007020.

The spelling of 116831990 in words is "one hundred sixteen million, eight hundred thirty-one thousand, nine hundred ninety".