220312401 has 16 divisors (see below), whose sum is σ = 311407488. Its totient is φ = 138067200.

The previous prime is 220312397. The next prime is 220312403. The reversal of 220312401 is 104213022.

It is not a de Polignac number, because 220312401 - 2² = 220312397 is a prime.

It is not an unprimeable number, because it can be changed into a prime (220312403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49956 + ... + 54186.

It is an arithmetic number, because the mean of its divisors is an integer number (19462968).

Almost surely, 2^220312401 is an apocalyptic number.

It is an amenable number.

220312401 is a deficient number, since it is larger than the sum of its proper divisors (91095087).

220312401 is a wasteful number, since it uses less digits than its factorization.

220312401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5272.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 220312401 is about 14842.9242738754. The cubic root of 220312401 is about 603.9666818237.

Adding to 220312401 its reverse (104213022), we get a palindrome (324525423).

The spelling of 220312401 in words is "two hundred twenty million, three hundred twelve thousand, four hundred one".