1131211203 has 8 divisors (see below), whose sum is σ = 1508519616. Its totient is φ = 754021800.

The previous prime is 1131211163. The next prime is 1131211241. The reversal of 1131211203 is 3021121311.

It is a happy number.

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

It is not a de Polignac number, because 1131211203 - 2¹² = 1131207107 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1131211243) 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, 4513 + ... + 47778.

It is an arithmetic number, because the mean of its divisors is an integer number (188564952).

Almost surely, 2^1131211203 is an apocalyptic number.

1131211203 is a deficient number, since it is larger than the sum of its proper divisors (377308413).

1131211203 is an equidigital number, since it uses as much as digits as its factorization.

1131211203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59505.

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 1131211203 is about 33633.4833610793. The cubic root of 1131211203 is about 1041.9524475950.

Adding to 1131211203 its reverse (3021121311), we get a palindrome (4152332514).

The spelling of 1131211203 in words is "one billion, one hundred thirty-one million, two hundred eleven thousand, two hundred three".