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143234413 = 720462059
BaseRepresentation
bin10001000100110…
…01010101101101
3100222112001200021
420202121111231
5243132000123
622114002141
73356321020
oct1042312555
9328461607
10143234413
1173941153
123bb76351
13238a05ba
14150471b7
15c894c5d
hex889956d

143234413 has 4 divisors (see below), whose sum is σ = 163696480. Its totient is φ = 122772348.

The previous prime is 143234389. The next prime is 143234423. The reversal of 143234413 is 314432341.

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 143234413 - 25 = 143234381 is a prime.

It is a super-3 number, since 3×1432344133 (a number of 25 digits) contains 333 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 (143234423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10231023 + ... + 10231036.

It is an arithmetic number, because the mean of its divisors is an integer number (40924120).

Almost surely, 2143234413 is an apocalyptic number.

It is an amenable number.

143234413 is a deficient number, since it is larger than the sum of its proper divisors (20462067).

143234413 is an equidigital number, since it uses as much as digits as its factorization.

143234413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20462066.

The product of its digits is 3456, while the sum is 25.

The square root of 143234413 is about 11968.0580296053. The cubic root of 143234413 is about 523.2177363336.

Adding to 143234413 its reverse (314432341), we get a palindrome (457666754).

The spelling of 143234413 in words is "one hundred forty-three million, two hundred thirty-four thousand, four hundred thirteen".

Divisors: 1 7 20462059 143234413