220401311 has 16 divisors (see below), whose sum is σ = 264549600. Its totient is φ = 181398528.

The previous prime is 220401241. The next prime is 220401317. The reversal of 220401311 is 113104022.

It is a cyclic number.

It is not a de Polignac number, because 220401311 - 2¹⁸ = 220139167 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 (220401317) 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, 22046 + ... + 30443.

It is an arithmetic number, because the mean of its divisors is an integer number (16534350).

Almost surely, 2^220401311 is an apocalyptic number.

220401311 is a deficient number, since it is larger than the sum of its proper divisors (44148289).

220401311 is a wasteful number, since it uses less digits than its factorization.

220401311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52538.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 220401311 is about 14845.9190015304. The cubic root of 220401311 is about 604.0479171596.

Adding to 220401311 its reverse (113104022), we get a palindrome (333505333).

The spelling of 220401311 in words is "two hundred twenty million, four hundred one thousand, three hundred eleven".