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504143231 = 722969739
BaseRepresentation
bin11110000011001…
…001110101111111
31022010122010111112
4132003021311333
52013030040411
6122005312235
715331101224
oct3603116577
91263563445
10504143231
112396372a9
12120a0567b
13805a5c07
152e3d5b8b
hex1e0c9d7f

504143231 has 4 divisors (see below), whose sum is σ = 504220200. Its totient is φ = 504066264.

The previous prime is 504143209. The next prime is 504143249. The reversal of 504143231 is 132341405.

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 504143231 - 218 = 503881087 is a prime.

It is a super-2 number, since 2×5041432312 = 508320794726238722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 504143197 and 504143206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (504143201) 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, 27641 + ... + 42098.

It is an arithmetic number, because the mean of its divisors is an integer number (126055050).

Almost surely, 2504143231 is an apocalyptic number.

504143231 is a deficient number, since it is larger than the sum of its proper divisors (76969).

504143231 is an equidigital number, since it uses as much as digits as its factorization.

504143231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76968.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 504143231 is about 22453.1341019467. The cubic root of 504143231 is about 795.8868212569.

Adding to 504143231 its reverse (132341405), we get a palindrome (636484636).

The spelling of 504143231 in words is "five hundred four million, one hundred forty-three thousand, two hundred thirty-one".

Divisors: 1 7229 69739 504143231