83231918 has 32 divisors (see below), whose sum is σ = 159287040. Its totient is φ = 31671360.

The previous prime is 83231903. The next prime is 83231921. The reversal of 83231918 is 81913238.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 338 + ... + 12906.

It is an arithmetic number, because the mean of its divisors is an integer number (4977720).

Almost surely, 2^83231918 is an apocalyptic number.

83231918 is a deficient number, since it is larger than the sum of its proper divisors (76055122).

83231918 is a wasteful number, since it uses less digits than its factorization.

83231918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12632.

The product of its digits is 10368, while the sum is 35.

The square root of 83231918 is about 9123.1528541398. The cubic root of 83231918 is about 436.6129715328.

The spelling of 83231918 in words is "eighty-three million, two hundred thirty-one thousand, nine hundred eighteen".