1131443203 has 8 divisors (see below), whose sum is σ = 1241694720. Its totient is φ = 1022423880.

The previous prime is 1131443197. The next prime is 1131443213. The reversal of 1131443203 is 3023441311.

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 1131443203 - 2²¹ = 1129346051 is a prime.

It is a super-2 number, since 2×1131443203² = 2560327443229798418, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1131443213) 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, 306123 + ... + 309796.

It is an arithmetic number, because the mean of its divisors is an integer number (155211840).

Almost surely, 2^1131443203 is an apocalyptic number.

1131443203 is a deficient number, since it is larger than the sum of its proper divisors (110251517).

1131443203 is a wasteful number, since it uses less digits than its factorization.

1131443203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 616097.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 1131443203 is about 33636.9321282426. The cubic root of 1131443203 is about 1042.0236740360.

Adding to 1131443203 its reverse (3023441311), we get a palindrome (4154884514).

The spelling of 1131443203 in words is "one billion, one hundred thirty-one million, four hundred forty-three thousand, two hundred three".