531270869 has 4 divisors (see below), whose sum is σ = 540275520. Its totient is φ = 522266220.

The previous prime is 531270821. The next prime is 531270877. The reversal of 531270869 is 968072135.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 531270869 - 2¹⁶ = 531205333 is a prime.

It is a super-2 number, since 2×531270869² = 564497472496030322, 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 (531270809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4502237 + ... + 4502354.

It is an arithmetic number, because the mean of its divisors is an integer number (135068880).

Almost surely, 2^531270869 is an apocalyptic number.

531270869 is a gapful number since it is divisible by the number (59) formed by its first and last digit.

It is an amenable number.

531270869 is a deficient number, since it is larger than the sum of its proper divisors (9004651).

531270869 is an equidigital number, since it uses as much as digits as its factorization.

531270869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9004650.

The product of its (nonzero) digits is 90720, while the sum is 41.

The square root of 531270869 is about 23049.3138509588. The cubic root of 531270869 is about 809.9135552721.

The spelling of 531270869 in words is "five hundred thirty-one million, two hundred seventy thousand, eight hundred sixty-nine".