220401313 has 4 divisors (see below), whose sum is σ = 240437808. Its totient is φ = 200364820.

The previous prime is 220401241. The next prime is 220401317. The reversal of 220401313 is 313104022.

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 220401313 - 2²¹ = 218304161 is a prime.

It is a Duffinian 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 3 ways as a sum of consecutive naturals, for example, 10018231 + ... + 10018252.

It is an arithmetic number, because the mean of its divisors is an integer number (60109452).

Almost surely, 2^220401313 is an apocalyptic number.

It is an amenable number.

220401313 is a deficient number, since it is larger than the sum of its proper divisors (20036495).

220401313 is a wasteful number, since it uses less digits than its factorization.

220401313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20036494.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 220401313 is about 14845.9190688889. The cubic root of 220401313 is about 604.0479189867.

Adding to 220401313 its reverse (313104022), we get a palindrome (533505335).

The spelling of 220401313 in words is "two hundred twenty million, four hundred one thousand, three hundred thirteen".