83031040 has 44 divisors (see below), whose sum is σ = 199189476. Its totient is φ = 33210368.

The previous prime is 83031029. The next prime is 83031041. The reversal of 83031040 is 4013038.

It can be written as a sum of positive squares in 2 ways, for example, as 49112064 + 33918976 = 7008^2 + 5824^2 .

It is a junction number, because it is equal to n+sod(n) for n = 83030999 and 83031017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83031041) 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, 2989 + ... + 13228.

Almost surely, 2^83031040 is an apocalyptic number.

83031040 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

83031040 is an abundant number, since it is smaller than the sum of its proper divisors (116158436).

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

83031040 is a wasteful number, since it uses less digits than its factorization.

83031040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16242 (or 16224 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 83031040 is about 9112.1369612183. The cubic root of 83031040 is about 436.2614373457.

Adding to 83031040 its reverse (4013038), we get a palindrome (87044078).

The spelling of 83031040 in words is "eighty-three million, thirty-one thousand, forty".