1231003103 has 16 divisors (see below), whose sum is σ = 1416096000. Its totient is φ = 1058316480.

The previous prime is 1231003091. The next prime is 1231003117. The reversal of 1231003103 is 3013001321.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1231003103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231003703) 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, 120275 + ... + 130107.

It is an arithmetic number, because the mean of its divisors is an integer number (88506000).

Almost surely, 2^1231003103 is an apocalyptic number.

1231003103 is a deficient number, since it is larger than the sum of its proper divisors (185092897).

1231003103 is a wasteful number, since it uses less digits than its factorization.

1231003103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10462.

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 1231003103 is about 35085.6538060786. The cubic root of 1231003103 is about 1071.7324550339.

Adding to 1231003103 its reverse (3013001321), we get a palindrome (4244004424).

The spelling of 1231003103 in words is "one billion, two hundred thirty-one million, three thousand, one hundred three".