1115530031 has 12 divisors (see below), whose sum is σ = 1415626920. Its totient is φ = 869243760.

The previous prime is 1115530019. The next prime is 1115530069. The reversal of 1115530031 is 1300355111.

It is not a de Polignac number, because 1115530031 - 2¹⁴ = 1115513647 is a prime.

It is a super-2 number, since 2×1115530031² = 2488814500125721922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1115529985 and 1115530012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1115530931) 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 11 ways as a sum of consecutive naturals, for example, 1034276 + ... + 1035353.

It is an arithmetic number, because the mean of its divisors is an integer number (117968910).

Almost surely, 2^1115530031 is an apocalyptic number.

1115530031 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1115530031 is a deficient number, since it is larger than the sum of its proper divisors (300096889).

1115530031 is a wasteful number, since it uses less digits than its factorization.

1115530031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2069654 (or 2069647 counting only the distinct ones).

The product of its (nonzero) digits is 225, while the sum is 20.

The square root of 1115530031 is about 33399.5513592623. The cubic root of 1115530031 is about 1037.1154135802.

Adding to 1115530031 its reverse (1300355111), we get a palindrome (2415885142).

The spelling of 1115530031 in words is "one billion, one hundred fifteen million, five hundred thirty thousand, thirty-one".