131231103 has 8 divisors (see below), whose sum is σ = 175191216. Its totient is φ = 87379200.

The previous prime is 131231071. The next prime is 131231131. The reversal of 131231103 is 301132131.

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

It is not a de Polignac number, because 131231103 - 2⁵ = 131231071 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131231183) 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, 24178 + ... + 29103.

It is an arithmetic number, because the mean of its divisors is an integer number (21898902).

Almost surely, 2^131231103 is an apocalyptic number.

131231103 is a deficient number, since it is larger than the sum of its proper divisors (43960113).

131231103 is an equidigital number, since it uses as much as digits as its factorization.

131231103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54105.

The product of its (nonzero) digits is 54, while the sum is 15.

The square root of 131231103 is about 11455.6144750074. The cubic root of 131231103 is about 508.1737875962.

Adding to 131231103 its reverse (301132131), we get a palindrome (432363234).

The spelling of 131231103 in words is "one hundred thirty-one million, two hundred thirty-one thousand, one hundred three".