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5143120231 = 9533539507
BaseRepresentation
bin1001100101000110…
…11100100101100111
3111021102200120121111
410302203130211213
541013114321411
62210202525451
7241310541424
oct46243344547
914242616544
105143120231
1121aa180397
12bb6506887
1363c6bc212
1436b0b8d4b
152017c7721
hex1328dc967

5143120231 has 4 divisors (see below), whose sum is σ = 5143669272. Its totient is φ = 5142571192.

The previous prime is 5143120219. The next prime is 5143120253. The reversal of 5143120231 is 1320213415.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 5143120231 - 215 = 5143087463 is a prime.

It is a super-2 number, since 2×51431202312 = 52903371421042986722, 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 (5143120261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 260221 + ... + 279286.

It is an arithmetic number, because the mean of its divisors is an integer number (1285917318).

Almost surely, 25143120231 is an apocalyptic number.

5143120231 is a deficient number, since it is larger than the sum of its proper divisors (549041).

5143120231 is an equidigital number, since it uses as much as digits as its factorization.

5143120231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549040.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 5143120231 is about 71715.5508310436. The cubic root of 5143120231 is about 1726.1381811148.

Adding to 5143120231 its reverse (1320213415), we get a palindrome (6463333646).

The spelling of 5143120231 in words is "five billion, one hundred forty-three million, one hundred twenty thousand, two hundred thirty-one".

Divisors: 1 9533 539507 5143120231