1231541103 has 8 divisors (see below), whose sum is σ = 1768366768. Its totient is φ = 757871424.

The previous prime is 1231541083. The next prime is 1231541131. The reversal of 1231541103 is 3011451321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1231541103 - 2⁵ = 1231541071 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1231541103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231541153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15788950 + ... + 15789027.

It is an arithmetic number, because the mean of its divisors is an integer number (221045846).

Almost surely, 2^1231541103 is an apocalyptic number.

1231541103 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1231541103 is a deficient number, since it is larger than the sum of its proper divisors (536825665).

1231541103 is a wasteful number, since it uses less digits than its factorization.

1231541103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31577993.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 1231541103 is about 35093.3199198936. The cubic root of 1231541103 is about 1071.8885629758. Note that the first 3 decimals are identical.

Adding to 1231541103 its reverse (3011451321), we get a palindrome (4242992424).

The spelling of 1231541103 in words is "one billion, two hundred thirty-one million, five hundred forty-one thousand, one hundred three".