220401403 has 4 divisors (see below), whose sum is σ = 224137080. Its totient is φ = 216665728.

The previous prime is 220401397. The next prime is 220401431. The reversal of 220401403 is 304104022.

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 220401403 - 2⁵ = 220401371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220401473) 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, 1867750 + ... + 1867867.

It is an arithmetic number, because the mean of its divisors is an integer number (56034270).

Almost surely, 2^220401403 is an apocalyptic number.

220401403 is a deficient number, since it is larger than the sum of its proper divisors (3735677).

220401403 is an equidigital number, since it uses as much as digits as its factorization.

220401403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3735676.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 220401403 is about 14845.9221000246. The cubic root of 220401403 is about 604.0480012068.

Adding to 220401403 its reverse (304104022), we get a palindrome (524505425).

The spelling of 220401403 in words is "two hundred twenty million, four hundred one thousand, four hundred three".