4256343321 has 4 divisors (see below), whose sum is σ = 5675124432. Its totient is φ = 2837562212.

The previous prime is 4256343281. The next prime is 4256343323. The reversal of 4256343321 is 1233436524.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 4256343321 - 2¹¹ = 4256341273 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4256343323) 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, 709390551 + ... + 709390556.

It is an arithmetic number, because the mean of its divisors is an integer number (1418781108).

Almost surely, 2^4256343321 is an apocalyptic number.

It is an amenable number.

4256343321 is a deficient number, since it is larger than the sum of its proper divisors (1418781111).

4256343321 is a wasteful number, since it uses less digits than its factorization.

4256343321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1418781110.

The product of its digits is 51840, while the sum is 33.

The square root of 4256343321 is about 65240.6569632771. The cubic root of 4256343321 is about 1620.6113783701.

Adding to 4256343321 its reverse (1233436524), we get a palindrome (5489779845).

The spelling of 4256343321 in words is "four billion, two hundred fifty-six million, three hundred forty-three thousand, three hundred twenty-one".