275431 has 4 divisors (see below), whose sum is σ = 296632. Its totient is φ = 254232.

The previous prime is 275423. The next prime is 275447. The reversal of 275431 is 134572.

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 275431 - 2³ = 275423 is a prime.

It is a super-2 number, since 2×275431² = 151724471522, 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 (275461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10581 + ... + 10606.

It is an arithmetic number, because the mean of its divisors is an integer number (74158).

2²⁷⁵⁴³¹ is an apocalyptic number.

275431 is a deficient number, since it is larger than the sum of its proper divisors (21201).

275431 is a wasteful number, since it uses less digits than its factorization.

275431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21200.

The product of its digits is 840, while the sum is 22.

The square root of 275431 is about 524.8152055724. The cubic root of 275431 is about 65.0635276347.

The spelling of 275431 in words is "two hundred seventy-five thousand, four hundred thirty-one".