1231230103 has 4 divisors (see below), whose sum is σ = 1237480200. Its totient is φ = 1224980008.

The previous prime is 1231230071. The next prime is 1231230139. The reversal of 1231230103 is 3010321321.

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 1231230103 - 2⁵ = 1231230071 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 (1231239103) 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, 3124753 + ... + 3125146.

It is an arithmetic number, because the mean of its divisors is an integer number (309370050).

Almost surely, 2^1231230103 is an apocalyptic number.

1231230103 is a deficient number, since it is larger than the sum of its proper divisors (6250097).

1231230103 is an equidigital number, since it uses as much as digits as its factorization.

1231230103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6250096.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 1231230103 is about 35088.8885973893. Note that the first 3 decimals coincide. The cubic root of 1231230103 is about 1071.7983276853.

Adding to 1231230103 its reverse (3010321321), we get a palindrome (4241551424).

The spelling of 1231230103 in words is "one billion, two hundred thirty-one million, two hundred thirty thousand, one hundred three".