1131312999 has 8 divisors (see below), whose sum is σ = 1549185520. Its totient is φ = 733824576.

The previous prime is 1131312967. The next prime is 1131313021. The reversal of 1131312999 is 9992131311.

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

It is not a de Polignac number, because 1131312999 - 2⁵ = 1131312967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131312599) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5095894 + ... + 5096115.

It is an arithmetic number, because the mean of its divisors is an integer number (193648190).

Almost surely, 2^1131312999 is an apocalyptic number.

1131312999 is a deficient number, since it is larger than the sum of its proper divisors (417872521).

1131312999 is a wasteful number, since it uses less digits than its factorization.

1131312999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10192049.

The product of its digits is 13122, while the sum is 39.

The square root of 1131312999 is about 33634.9966404042. The cubic root of 1131312999 is about 1041.9837012370.

It can be divided in two parts, 1131312 and 999, that added together give a palindrome (1132311).

The spelling of 1131312999 in words is "one billion, one hundred thirty-one million, three hundred twelve thousand, nine hundred ninety-nine".