287134 has 4 divisors (see below), whose sum is σ = 430704. Its totient is φ = 143566.

The previous prime is 287117. The next prime is 287137. The reversal of 287134 is 431782.

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

It is a junction number, because it is equal to n+sod(n) for n = 287099 and 287108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (287137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71782 + ... + 71785.

It is an arithmetic number, because the mean of its divisors is an integer number (107676).

2²⁸⁷¹³⁴ is an apocalyptic number.

287134 is a deficient number, since it is larger than the sum of its proper divisors (143570).

287134 is a wasteful number, since it uses less digits than its factorization.

287134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143569.

The product of its digits is 1344, while the sum is 25.

The square root of 287134 is about 535.8488592878. The cubic root of 287134 is about 65.9722871102.

The spelling of 287134 in words is "two hundred eighty-seven thousand, one hundred thirty-four".