1111431199 has 8 divisors (see below), whose sum is σ = 1128001680. Its totient is φ = 1094951616.

The previous prime is 1111431161. The next prime is 1111431247. The reversal of 1111431199 is 9911341111.

It is a happy number.

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 1111431199 - 2⁹ = 1111430687 is a prime.

It is a super-2 number, since 2×1111431199² = 2470558620221155202, which contains 22 as substring.

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 1111431199.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111431109) 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, 2112 + ... + 47194.

It is an arithmetic number, because the mean of its divisors is an integer number (141000210).

Almost surely, 2^1111431199 is an apocalyptic number.

1111431199 is a deficient number, since it is larger than the sum of its proper divisors (16570481).

1111431199 is an equidigital number, since it uses as much as digits as its factorization.

1111431199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45449.

The product of its digits is 972, while the sum is 31.

The square root of 1111431199 is about 33338.1343059266. The cubic root of 1111431199 is about 1035.8436178515.

The spelling of 1111431199 in words is "one billion, one hundred eleven million, four hundred thirty-one thousand, one hundred ninety-nine".