1131320203 has 8 divisors (see below), whose sum is σ = 1218672000. Its totient is φ = 1044015168.

The previous prime is 1131320171. The next prime is 1131320209. The reversal of 1131320203 is 3020231311.

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 1131320203 - 2⁵ = 1131320171 is a prime.

It is a super-2 number, since 2×1131320203² = 2559770803431922418, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1131320209) 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, 51078 + ... + 69796.

It is an arithmetic number, because the mean of its divisors is an integer number (152334000).

Almost surely, 2^1131320203 is an apocalyptic number.

1131320203 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1131320203 is a deficient number, since it is larger than the sum of its proper divisors (87351797).

1131320203 is a wasteful number, since it uses less digits than its factorization.

1131320203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23381.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 1131320203 is about 33635.1037310724. The cubic root of 1131320203 is about 1041.9859129546.

Adding to 1131320203 its reverse (3020231311), we get a palindrome (4151551514).

The spelling of 1131320203 in words is "one billion, one hundred thirty-one million, three hundred twenty thousand, two hundred three".