1231323103 has 8 divisors (see below), whose sum is σ = 1269582336. Its totient is φ = 1193501400.

The previous prime is 1231323089. The next prime is 1231323167. The reversal of 1231323103 is 3013231321.

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 1231323103 - 2²⁹ = 694452191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231321103) 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, 103663 + ... + 114928.

It is an arithmetic number, because the mean of its divisors is an integer number (158697792).

Almost surely, 2^1231323103 is an apocalyptic number.

1231323103 is a deficient number, since it is larger than the sum of its proper divisors (38259233).

1231323103 is a wasteful number, since it uses less digits than its factorization.

1231323103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218765.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 1231323103 is about 35090.2137782032. The cubic root of 1231323103 is about 1071.8253128211.

Adding to 1231323103 its reverse (3013231321), we get a palindrome (4244554424).

The spelling of 1231323103 in words is "one billion, two hundred thirty-one million, three hundred twenty-three thousand, one hundred three".