2131321303 has 4 divisors (see below), whose sum is σ = 2139614640. Its totient is φ = 2123027968.

The previous prime is 2131321279. The next prime is 2131321321. The reversal of 2131321303 is 3031231312.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2131321303 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 (2131321343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4146283 + ... + 4146796.

It is an arithmetic number, because the mean of its divisors is an integer number (534903660).

Almost surely, 2^2131321303 is an apocalyptic number.

2131321303 is a deficient number, since it is larger than the sum of its proper divisors (8293337).

2131321303 is an equidigital number, since it uses as much as digits as its factorization.

2131321303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8293336.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 2131321303 is about 46166.2355298762. The cubic root of 2131321303 is about 1286.9143451074.

Adding to 2131321303 its reverse (3031231312), we get a palindrome (5162552615).

The spelling of 2131321303 in words is "two billion, one hundred thirty-one million, three hundred twenty-one thousand, three hundred three".