1231132203 has 30 divisors (see below), whose sum is σ = 2139366636. Its totient is φ = 703501848.

The previous prime is 1231132153. The next prime is 1231132207. The reversal of 1231132203 is 3022311321.

It is not a de Polignac number, because 1231132203 - 2¹⁴ = 1231115819 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1231132207) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 151125 + ... + 159062.

Almost surely, 2^1231132203 is an apocalyptic number.

1231132203 is a deficient number, since it is larger than the sum of its proper divisors (908234433).

1231132203 is an equidigital number, since it uses as much as digits as its factorization.

1231132203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310213 (or 310197 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 1231132203 is about 35087.4935411465. The cubic root of 1231132203 is about 1071.7699192837.

Adding to 1231132203 its reverse (3022311321), we get a palindrome (4253443524).

It can be divided in two parts, 123113 and 2203, that added together give a square (125316 = 354²).

The spelling of 1231132203 in words is "one billion, two hundred thirty-one million, one hundred thirty-two thousand, two hundred three".