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3143043221 = 31591718449
BaseRepresentation
bin1011101101010111…
…0000100010010101
322010001012010202012
42323111300202111
522414104340341
61235514154005
7140613266213
oct27325604225
98101163665
103143043221
11137319098a
12738722905
133b1218ab6
1421b5ddcb3
15135dec0eb
hexbb570895

3143043221 has 8 divisors (see below), whose sum is σ = 3299424000. Its totient is φ = 2990099520.

The previous prime is 3143043209. The next prime is 3143043223. The reversal of 3143043221 is 1223403413.

3143043221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3143043221 - 210 = 3143042197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3143043223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 857396 + ... + 861053.

It is an arithmetic number, because the mean of its divisors is an integer number (412428000).

Almost surely, 23143043221 is an apocalyptic number.

3143043221 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

3143043221 is a deficient number, since it is larger than the sum of its proper divisors (156380779).

3143043221 is a wasteful number, since it uses less digits than its factorization.

3143043221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1718539.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 3143043221 is about 56062.8506321254. The cubic root of 3143043221 is about 1464.8172681884.

Adding to 3143043221 its reverse (1223403413), we get a palindrome (4366446634).

The spelling of 3143043221 in words is "three billion, one hundred forty-three million, forty-three thousand, two hundred twenty-one".

Divisors: 1 31 59 1829 1718449 53271919 101388491 3143043221