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3143210021 = 72006322381
BaseRepresentation
bin1011101101011001…
…1001010000100101
322010001111121112222
42323112121100211
522414130210041
61235521522125
7140614562420
oct27326312045
98101447488
103143210021
111373295236
127387a3345
133b12769b3
1421b6449b7
15135e3174b
hexbb599425

3143210021 has 8 divisors (see below), whose sum is σ = 3592579584. Its totient is φ = 2693925360.

The previous prime is 3143209943. The next prime is 3143210041. The reversal of 3143210021 is 1200123413.

3143210021 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 not a de Polignac number, because 3143210021 - 210 = 3143208997 is a prime.

It is a super-2 number, since 2×31432100212 = 19759538472229640882, 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 (3143210041) 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, 129251 + ... + 151631.

It is an arithmetic number, because the mean of its divisors is an integer number (449072448).

Almost surely, 23143210021 is an apocalyptic number.

It is an amenable number.

3143210021 is a deficient number, since it is larger than the sum of its proper divisors (449369563).

3143210021 is a wasteful number, since it uses less digits than its factorization.

3143210021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42451.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 3143210021 is about 56064.3382285032. The cubic root of 3143210021 is about 1464.8431801450.

Adding to 3143210021 its reverse (1200123413), we get a palindrome (4343333434).

The spelling of 3143210021 in words is "three billion, one hundred forty-three million, two hundred ten thousand, twenty-one".

Divisors: 1 7 20063 22381 140441 156667 449030003 3143210021