220400430311 has 4 divisors (see below), whose sum is σ = 221258019792. Its totient is φ = 219542840832.

The previous prime is 220400430259. The next prime is 220400430337. The reversal of 220400430311 is 113034004022.

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

It is a cyclic number.

It is not a de Polignac number, because 220400430311 - 2²⁶ = 220333321447 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 (220400430611) 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, 428794355 + ... + 428794868.

It is an arithmetic number, because the mean of its divisors is an integer number (55314504948).

Almost surely, 2^220400430311 is an apocalyptic number.

220400430311 is a deficient number, since it is larger than the sum of its proper divisors (857589481).

220400430311 is an equidigital number, since it uses as much as digits as its factorization.

220400430311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 857589480.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 220400430311 its reverse (113034004022), we get a palindrome (333434434333).

The spelling of 220400430311 in words is "two hundred twenty billion, four hundred million, four hundred thirty thousand, three hundred eleven".