1116531001 has 8 divisors (see below), whose sum is σ = 1155731400. Its totient is φ = 1077377280.

The previous prime is 1116530977. The next prime is 1116531011. The reversal of 1116531001 is 1001356111.

It can be written as a sum of positive squares in 4 ways, for example, as 449652025 + 666878976 = 21205^2 + 25824^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1116531001 - 2⁵ = 1116530969 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1116531001.

It is not an unprimeable number, because it can be changed into a prime (1116531011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41121 + ... + 62641.

It is an arithmetic number, because the mean of its divisors is an integer number (144466425).

Almost surely, 2^1116531001 is an apocalyptic number.

It is an amenable number.

1116531001 is a deficient number, since it is larger than the sum of its proper divisors (39200399).

1116531001 is a wasteful number, since it uses less digits than its factorization.

1116531001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23339.

The product of its (nonzero) digits is 90, while the sum is 19.

The square root of 1116531001 is about 33414.5327814111. The cubic root of 1116531001 is about 1037.4255235841.

Adding to 1116531001 its reverse (1001356111), we get a palindrome (2117887112).

The spelling of 1116531001 in words is "one billion, one hundred sixteen million, five hundred thirty-one thousand, one".