2051326321 has 4 divisors (see below), whose sum is σ = 2237810544. Its totient is φ = 1864842100.

The previous prime is 2051326307. The next prime is 2051326351. The reversal of 2051326321 is 1236231502.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2051326321 - 2¹⁵ = 2051293553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2051326351) 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, 93242095 + ... + 93242116.

It is an arithmetic number, because the mean of its divisors is an integer number (559452636).

Almost surely, 2^2051326321 is an apocalyptic number.

It is an amenable number.

2051326321 is a deficient number, since it is larger than the sum of its proper divisors (186484223).

2051326321 is a wasteful number, since it uses less digits than its factorization.

2051326321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186484222.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 2051326321 is about 45291.5700876002. The cubic root of 2051326321 is about 1270.6079964395.

Adding to 2051326321 its reverse (1236231502), we get a palindrome (3287557823).

The spelling of 2051326321 in words is "two billion, fifty-one million, three hundred twenty-six thousand, three hundred twenty-one".