131421103 has 16 divisors (see below), whose sum is σ = 151854336. Its totient is φ = 112559040.

The previous prime is 131421091. The next prime is 131421109. The reversal of 131421103 is 301124131.

It is a de Polignac number, because none of the positive numbers 2^k-131421103 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 (131421109) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13075 + ... + 20827.

It is an arithmetic number, because the mean of its divisors is an integer number (9490896).

Almost surely, 2^131421103 is an apocalyptic number.

131421103 is a deficient number, since it is larger than the sum of its proper divisors (20433233).

131421103 is a wasteful number, since it uses less digits than its factorization.

131421103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7854.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 131421103 is about 11463.9043523574. The cubic root of 131421103 is about 508.4189186602.

Adding to 131421103 its reverse (301124131), we get a palindrome (432545234).

The spelling of 131421103 in words is "one hundred thirty-one million, four hundred twenty-one thousand, one hundred three".