113731387 has 8 divisors (see below), whose sum is σ = 141795072. Its totient is φ = 88621800.

The previous prime is 113731381. The next prime is 113731391. The reversal of 113731387 is 783137311.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-113731387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (113731381) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 738439 + ... + 738592.

It is an arithmetic number, because the mean of its divisors is an integer number (17724384).

Almost surely, 2^113731387 is an apocalyptic number.

113731387 is a deficient number, since it is larger than the sum of its proper divisors (28063685).

113731387 is a wasteful number, since it uses less digits than its factorization.

113731387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1477049.

The product of its digits is 10584, while the sum is 34.

The square root of 113731387 is about 10664.4918772532. The cubic root of 113731387 is about 484.4996249398.

Adding to 113731387 its reverse (783137311), we get a palindrome (896868698).

The spelling of 113731387 in words is "one hundred thirteen million, seven hundred thirty-one thousand, three hundred eighty-seven".