1123431303 has 8 divisors (see below), whose sum is σ = 1501820928. Its totient is φ = 746997944.

The previous prime is 1123431299. The next prime is 1123431307. The reversal of 1123431303 is 3031343211.

It is an interprime number because it is at equal distance from previous prime (1123431299) and next prime (1123431307).

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 1123431303 - 2² = 1123431299 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1123431303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123431307) 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, 487725 + ... + 490022.

It is an arithmetic number, because the mean of its divisors is an integer number (187727616).

Almost surely, 2^1123431303 is an apocalyptic number.

1123431303 is a deficient number, since it is larger than the sum of its proper divisors (378389625).

1123431303 is an equidigital number, since it uses as much as digits as its factorization.

1123431303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 978133.

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 1123431303 is about 33517.6267507113. The cubic root of 1123431303 is about 1039.5582761069.

Adding to 1123431303 its reverse (3031343211), we get a palindrome (4154774514).

The spelling of 1123431303 in words is "one billion, one hundred twenty-three million, four hundred thirty-one thousand, three hundred three".