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3221144401 = 7145368231
BaseRepresentation
bin1011111111111110…
…1100001101010001
322022111011002102111
42333333230031101
523044103110101
61251344145321
7142552163356
oct27777541521
98274132374
103221144401
111403285512
1275a908241
133c4462b07
14227b3062d
1513cbc8251
hexbffec351

3221144401 has 4 divisors (see below), whose sum is σ = 3266512704. Its totient is φ = 3175776100.

The previous prime is 3221144393. The next prime is 3221144413. The reversal of 3221144401 is 1044411223.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1044411223 = 1721606863.

It is a cyclic number.

It is not a de Polignac number, because 3221144401 - 23 = 3221144393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3221141401) 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, 22684045 + ... + 22684186.

It is an arithmetic number, because the mean of its divisors is an integer number (816628176).

Almost surely, 23221144401 is an apocalyptic number.

It is an amenable number.

3221144401 is a deficient number, since it is larger than the sum of its proper divisors (45368303).

3221144401 is an equidigital number, since it uses as much as digits as its factorization.

3221144401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45368302.

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 3221144401 is about 56755.1266494931. The cubic root of 3221144401 is about 1476.8511701128.

Adding to 3221144401 its reverse (1044411223), we get a palindrome (4265555624).

The spelling of 3221144401 in words is "three billion, two hundred twenty-one million, one hundred forty-four thousand, four hundred one".

Divisors: 1 71 45368231 3221144401