113131240 has 16 divisors (see below), whose sum is σ = 254545380. Its totient is φ = 45252480.

The previous prime is 113131229. The next prime is 113131253. The reversal of 113131240 is 42131311.

It can be written as a sum of positive squares in 2 ways, for example, as 113081956 + 49284 = 10634^2 + 222^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1414101 + ... + 1414180.

Almost surely, 2^113131240 is an apocalyptic number.

113131240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

113131240 is an abundant number, since it is smaller than the sum of its proper divisors (141414140).

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

113131240 is a wasteful number, since it uses less digits than its factorization.

113131240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2828292 (or 2828288 counting only the distinct ones).

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

The square root of 113131240 is about 10636.3170317549. The cubic root of 113131240 is about 483.6459058876.

Adding to 113131240 its reverse (42131311), we get a palindrome (155262551).

The spelling of 113131240 in words is "one hundred thirteen million, one hundred thirty-one thousand, two hundred forty".