1123003131 has 4 divisors (see below), whose sum is σ = 1497337512. Its totient is φ = 748668752.

The previous prime is 1123003121. The next prime is 1123003183. The reversal of 1123003131 is 1313003211.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1123003131 - 2⁶ = 1123003067 is a prime.

It is a super-2 number, since 2×1123003131² = 2522272064471606322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1123003131.

It is not an unprimeable number, because it can be changed into a prime (1123003121) 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, 187167186 + ... + 187167191.

It is an arithmetic number, because the mean of its divisors is an integer number (374334378).

Almost surely, 2^1123003131 is an apocalyptic number.

1123003131 is a deficient number, since it is larger than the sum of its proper divisors (374334381).

1123003131 is an equidigital number, since it uses as much as digits as its factorization.

1123003131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374334380.

The product of its (nonzero) digits is 54, while the sum is 15.

The square root of 1123003131 is about 33511.2388759353. The cubic root of 1123003131 is about 1039.4261907998.

Adding to 1123003131 its reverse (1313003211), we get a palindrome (2436006342).

The spelling of 1123003131 in words is "one billion, one hundred twenty-three million, three thousand, one hundred thirty-one".