1117031387 has 4 divisors (see below), whose sum is σ = 1120232400. Its totient is φ = 1113830376.

The previous prime is 1117031351. The next prime is 1117031389. The reversal of 1117031387 is 7831307111.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1117031387 - 2⁸ = 1117031131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1117031389) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1599983 + ... + 1600680.

It is an arithmetic number, because the mean of its divisors is an integer number (280058100).

Almost surely, 2^1117031387 is an apocalyptic number.

1117031387 is a deficient number, since it is larger than the sum of its proper divisors (3201013).

1117031387 is an equidigital number, since it uses as much as digits as its factorization.

1117031387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3201012.

The product of its (nonzero) digits is 3528, while the sum is 32.

The square root of 1117031387 is about 33422.0194931425. The cubic root of 1117031387 is about 1037.5804784332.

Adding to 1117031387 its reverse (7831307111), we get a palindrome (8948338498).

The spelling of 1117031387 in words is "one billion, one hundred seventeen million, thirty-one thousand, three hundred eighty-seven".