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230220401 = 376222173
BaseRepresentation
bin11011011100011…
…10001001110001
3121001012102000112
431232032021301
5432414023101
634502231105
75463561335
oct1556161161
9531172015
10230220401
11108a53aa4
1265125495
13389086b8
142280b7c5
15153286bb
hexdb8e271

230220401 has 4 divisors (see below), whose sum is σ = 236442612. Its totient is φ = 223998192.

The previous prime is 230220391. The next prime is 230220407. The reversal of 230220401 is 104022032.

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

It can be written as a sum of positive squares in 2 ways, for example, as 163226176 + 66994225 = 12776^2 + 8185^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-230220401 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (230220407) 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, 3111050 + ... + 3111123.

It is an arithmetic number, because the mean of its divisors is an integer number (59110653).

Almost surely, 2230220401 is an apocalyptic number.

It is an amenable number.

230220401 is a deficient number, since it is larger than the sum of its proper divisors (6222211).

230220401 is an equidigital number, since it uses as much as digits as its factorization.

230220401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6222210.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 230220401 is about 15173.0155539365. The cubic root of 230220401 is about 612.8882123684. Note that the first 3 decimals are identical.

Adding to 230220401 its reverse (104022032), we get a palindrome (334242433).

The spelling of 230220401 in words is "two hundred thirty million, two hundred twenty thousand, four hundred one".

Divisors: 1 37 6222173 230220401