1131425203 has 4 divisors (see below), whose sum is σ = 1131640848. Its totient is φ = 1131209560.

The previous prime is 1131425189. The next prime is 1131425209. The reversal of 1131425203 is 3025241311.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3025241311 = 113 ⋅26772047.

It is a cyclic number.

It is not a de Polignac number, because 1131425203 - 2⁹ = 1131424691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1131425209) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99751 + ... + 110512.

It is an arithmetic number, because the mean of its divisors is an integer number (282910212).

Almost surely, 2^1131425203 is an apocalyptic number.

1131425203 is a deficient number, since it is larger than the sum of its proper divisors (215645).

1131425203 is an equidigital number, since it uses as much as digits as its factorization.

1131425203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215644.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 1131425203 is about 33636.6645641330. The cubic root of 1131425203 is about 1042.0181481950.

Adding to 1131425203 its reverse (3025241311), we get a palindrome (4156666514).

The spelling of 1131425203 in words is "one billion, one hundred thirty-one million, four hundred twenty-five thousand, two hundred three".