20256034323 has 16 divisors (see below), whose sum is σ = 30894007040. Its totient is φ = 11564500896.

The previous prime is 20256034307. The next prime is 20256034343. The reversal of 20256034323 is 32343065202.

It is not a de Polignac number, because 20256034323 - 2⁴ = 20256034307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20256034303) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 408313 + ... + 455226.

It is an arithmetic number, because the mean of its divisors is an integer number (1930875440).

Almost surely, 2^20256034323 is an apocalyptic number.

20256034323 is a deficient number, since it is larger than the sum of its proper divisors (10637972717).

20256034323 is a wasteful number, since it uses less digits than its factorization.

20256034323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 864666.

The product of its (nonzero) digits is 25920, while the sum is 30.

Adding to 20256034323 its reverse (32343065202), we get a palindrome (52599099525).

The spelling of 20256034323 in words is "twenty billion, two hundred fifty-six million, thirty-four thousand, three hundred twenty-three".