113031387 has 18 divisors (see below), whose sum is σ = 189924228. Its totient is φ = 64589112.

The previous prime is 113031377. The next prime is 113031409. The reversal of 113031387 is 783130311.

It is not a de Polignac number, because 113031387 - 2⁴ = 113031371 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 113031387.

It is not an unprimeable number, because it can be changed into a prime (113031307) 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 17 ways as a sum of consecutive naturals, for example, 127713 + ... + 128594.

It is an arithmetic number, because the mean of its divisors is an integer number (10551346).

Almost surely, 2^113031387 is an apocalyptic number.

113031387 is a deficient number, since it is larger than the sum of its proper divisors (76892841).

113031387 is a wasteful number, since it uses less digits than its factorization.

113031387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256327 (or 256317 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 113031387 is about 10631.6220305276. The cubic root of 113031387 is about 483.5035705785.

Adding to 113031387 its reverse (783130311), we get a palindrome (896161698).

The spelling of 113031387 in words is "one hundred thirteen million, thirty-one thousand, three hundred eighty-seven".