131211103 has 8 divisors (see below), whose sum is σ = 136540800. Its totient is φ = 125985048.

The previous prime is 131211097. The next prime is 131211133. The reversal of 131211103 is 301112131.

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 131211103 - 2⁹ = 131210591 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 (131211133) 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, 23323 + ... + 28396.

It is an arithmetic number, because the mean of its divisors is an integer number (17067600).

Almost surely, 2^131211103 is an apocalyptic number.

131211103 is a deficient number, since it is larger than the sum of its proper divisors (5329697).

131211103 is an equidigital number, since it uses as much as digits as its factorization.

131211103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51821.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 131211103 is about 11454.7415073410. The cubic root of 131211103 is about 508.1479705659.

Adding to 131211103 its reverse (301112131), we get a palindrome (432323234).

The spelling of 131211103 in words is "one hundred thirty-one million, two hundred eleven thousand, one hundred three".