Search a number
-
+
143114431 = 743192617
BaseRepresentation
bin10001000011111…
…00000010111111
3100222021222002111
420201330002333
5243114130211
622111234451
73355311145
oct1041740277
9328258074
10143114431
1173869a99
123bb18a27
132385aac5
1415015595
15c86e421
hex887c0bf

143114431 has 4 divisors (see below), whose sum is σ = 143307792. Its totient is φ = 142921072.

The previous prime is 143114429. The next prime is 143114443. The reversal of 143114431 is 134411341.

It is a happy number.

143114431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 134411341 = 557241313.

It is a cyclic number.

It is not a de Polignac number, because 143114431 - 21 = 143114429 is a prime.

It is a super-2 number, since 2×1431144312 = 40963480720907522, 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 (143144431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95566 + ... + 97051.

It is an arithmetic number, because the mean of its divisors is an integer number (35826948).

Almost surely, 2143114431 is an apocalyptic number.

143114431 is a deficient number, since it is larger than the sum of its proper divisors (193361).

143114431 is an equidigital number, since it uses as much as digits as its factorization.

143114431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193360.

The product of its digits is 576, while the sum is 22.

The square root of 143114431 is about 11963.0443867771. The cubic root of 143114431 is about 523.0716023475.

Adding to 143114431 its reverse (134411341), we get a palindrome (277525772).

The spelling of 143114431 in words is "one hundred forty-three million, one hundred fourteen thousand, four hundred thirty-one".

Divisors: 1 743 192617 143114431