2131200403 has 4 divisors (see below), whose sum is σ = 2146532920. Its totient is φ = 2115867888.

The previous prime is 2131200367. The next prime is 2131200457. The reversal of 2131200403 is 3040021312.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2131200403 - 2⁹ = 2131199891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2131200103) 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 3 ways as a sum of consecutive naturals, for example, 7666050 + ... + 7666327.

It is an arithmetic number, because the mean of its divisors is an integer number (536633230).

Almost surely, 2^2131200403 is an apocalyptic number.

2131200403 is a deficient number, since it is larger than the sum of its proper divisors (15332517).

2131200403 is a wasteful number, since it uses less digits than its factorization.

2131200403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15332516.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 2131200403 is about 46164.9261127969. The cubic root of 2131200403 is about 1286.8900110810.

Adding to 2131200403 its reverse (3040021312), we get a palindrome (5171221715).

The spelling of 2131200403 in words is "two billion, one hundred thirty-one million, two hundred thousand, four hundred three".