1231200103 has 16 divisors (see below), whose sum is σ = 1424646144. Its totient is φ = 1042221600.

The previous prime is 1231200083. The next prime is 1231200119. The reversal of 1231200103 is 3010021321.

It is not a de Polignac number, because 1231200103 - 2²⁵ = 1197645671 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 (1231204103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 198753 + ... + 204853.

It is an arithmetic number, because the mean of its divisors is an integer number (89040384).

Almost surely, 2^1231200103 is an apocalyptic number.

1231200103 is a deficient number, since it is larger than the sum of its proper divisors (193446041).

1231200103 is a wasteful number, since it uses less digits than its factorization.

1231200103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6462.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 1231200103 is about 35088.4611090313. The cubic root of 1231200103 is about 1071.7896225128.

Adding to 1231200103 its reverse (3010021321), we get a palindrome (4241221424).

The spelling of 1231200103 in words is "one billion, two hundred thirty-one million, two hundred thousand, one hundred three".