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143113369 = 7217092
BaseRepresentation
bin10001000011110…
…11110010011001
3100222021220122011
420201323302121
5243114111434
622111225521
73355305100
oct1041736231
9328256564
10143113369
1173869213
123bb182a1
132385a489
1415015037
15c86de64
hex887bc99

143113369 has 9 divisors (see below), whose sum is σ = 166576287. Its totient is φ = 122596824.

The previous prime is 143113367. The next prime is 143113393. The reversal of 143113369 is 963311341.

The square root of 143113369 is 11963.

It is a perfect power (a square), and thus also a powerful number.

143113369 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 26904969 + 116208400 = 5187^2 + 10780^2 .

It is not a de Polignac number, because 143113369 - 21 = 143113367 is a prime.

It is a super-2 number, since 2×1431133692 = 40962872773060322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 143113369.

It is not an unprimeable number, because it can be changed into a prime (143113367) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 82887 + ... + 84595.

Almost surely, 2143113369 is an apocalyptic number.

143113369 is the 11963-rd square number.

143113369 is the 5982-nd centered octagonal number.

It is an amenable number.

143113369 is a deficient number, since it is larger than the sum of its proper divisors (23462918).

143113369 is an frugal number, since it uses more digits than its factorization.

143113369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3432 (or 1716 counting only the distinct ones).

The product of its digits is 5832, while the sum is 31.

The cubic root of 143113369 is about 523.0703085031.

The spelling of 143113369 in words is "one hundred forty-three million, one hundred thirteen thousand, three hundred sixty-nine".

Divisors: 1 7 49 1709 11963 83741 2920681 20444767 143113369