113831540 has 12 divisors (see below), whose sum is σ = 239046276. Its totient is φ = 45532608.

The previous prime is 113831521. The next prime is 113831561. The reversal of 113831540 is 45138311.

It can be written as a sum of positive squares in 2 ways, for example, as 63648484 + 50183056 = 7978^2 + 7084^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2845769 + ... + 2845808.

It is an arithmetic number, because the mean of its divisors is an integer number (19920523).

Almost surely, 2^113831540 is an apocalyptic number.

113831540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

113831540 is an abundant number, since it is smaller than the sum of its proper divisors (125214736).

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

113831540 is a wasteful number, since it uses less digits than its factorization.

113831540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5691586 (or 5691584 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 113831540 is about 10669.1864732040. The cubic root of 113831540 is about 484.6418016234.

Adding to 113831540 its reverse (45138311), we get a palindrome (158969851).

The spelling of 113831540 in words is "one hundred thirteen million, eight hundred thirty-one thousand, five hundred forty".