2131414321 has 4 divisors (see below), whose sum is σ = 2256791652. Its totient is φ = 2006036992.

The previous prime is 2131414303. The next prime is 2131414367. The reversal of 2131414321 is 1234141312.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1471489600 + 659924721 = 38360^2 + 25689^2 .

It is not a de Polignac number, because 2131414321 - 2⁵ = 2131414289 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2131414292 and 2131414301.

It is not an unprimeable number, because it can be changed into a prime (2131414721) 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, 62688640 + ... + 62688673.

It is an arithmetic number, because the mean of its divisors is an integer number (564197913).

Almost surely, 2^2131414321 is an apocalyptic number.

It is an amenable number.

2131414321 is a deficient number, since it is larger than the sum of its proper divisors (125377331).

2131414321 is a wasteful number, since it uses less digits than its factorization.

2131414321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125377330.

The product of its digits is 576, while the sum is 22.

The square root of 2131414321 is about 46167.2429434550. The cubic root of 2131414321 is about 1286.9330665857.

Adding to 2131414321 its reverse (1234141312), we get a palindrome (3365555633).

The spelling of 2131414321 in words is "two billion, one hundred thirty-one million, four hundred fourteen thousand, three hundred twenty-one".