1323115503 has 16 divisors (see below), whose sum is σ = 1841978880. Its totient is φ = 843211424.

The previous prime is 1323115489. The next prime is 1323115529. The reversal of 1323115503 is 3055113231.

It is a cyclic number.

It is not a de Polignac number, because 1323115503 - 2⁴ = 1323115487 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1323115543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 131278 + ... + 140996.

It is an arithmetic number, because the mean of its divisors is an integer number (115123680).

Almost surely, 2^1323115503 is an apocalyptic number.

1323115503 is a deficient number, since it is larger than the sum of its proper divisors (518863377).

1323115503 is a wasteful number, since it uses less digits than its factorization.

1323115503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11718.

The product of its (nonzero) digits is 1350, while the sum is 24.

The square root of 1323115503 is about 36374.6546787732. The cubic root of 1323115503 is about 1097.8236592267.

Adding to 1323115503 its reverse (3055113231), we get a palindrome (4378228734).

The spelling of 1323115503 in words is "one billion, three hundred twenty-three million, one hundred fifteen thousand, five hundred three".