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3142221989 = 4766855787
BaseRepresentation
bin1011101101001010…
…1000000010100101
322002222122102020012
42323102220002211
522413402100424
61235444420005
7140603306024
oct27322500245
98088572205
103142221989
11137277a985
127383a7605
133b0cbc06a
1421b4688bb
15135cd8b0e
hexbb4a80a5

3142221989 has 4 divisors (see below), whose sum is σ = 3209077824. Its totient is φ = 3075366156.

The previous prime is 3142221983. The next prime is 3142222019. The reversal of 3142221989 is 9891222413.

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 3142221989 - 212 = 3142217893 is a prime.

It is a super-2 number, since 2×31422219892 = 19747118056310232242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3142221983) 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, 33427847 + ... + 33427940.

It is an arithmetic number, because the mean of its divisors is an integer number (802269456).

Almost surely, 23142221989 is an apocalyptic number.

It is an amenable number.

3142221989 is a deficient number, since it is larger than the sum of its proper divisors (66855835).

3142221989 is an equidigital number, since it uses as much as digits as its factorization.

3142221989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66855834.

The product of its digits is 62208, while the sum is 41.

The square root of 3142221989 is about 56055.5259452625. The cubic root of 3142221989 is about 1464.6896785121.

The spelling of 3142221989 in words is "three billion, one hundred forty-two million, two hundred twenty-one thousand, nine hundred eighty-nine".

Divisors: 1 47 66855787 3142221989