532131709 has 4 divisors (see below), whose sum is σ = 549297280. Its totient is φ = 514966140.

The previous prime is 532131707. The next prime is 532131757. The reversal of 532131709 is 907131235.

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, and also an emirpimes, since its reverse is a distinct semiprime: 907131235 = 5 ⋅181426247.

It is a cyclic number.

It is not a de Polignac number, because 532131709 - 2¹ = 532131707 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31), and also a Moran number because the ratio is a prime number: 17165539 = 532131709 / (5 + 3 + 2 + 1 + 3 + 1 + 7 + 0 + 9).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (532131707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8582739 + ... + 8582800.

It is an arithmetic number, because the mean of its divisors is an integer number (137324320).

Almost surely, 2^532131709 is an apocalyptic number.

It is an amenable number.

532131709 is a deficient number, since it is larger than the sum of its proper divisors (17165571).

532131709 is a wasteful number, since it uses less digits than its factorization.

532131709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17165570.

The product of its (nonzero) digits is 5670, while the sum is 31.

The square root of 532131709 is about 23067.9801673228. The cubic root of 532131709 is about 810.3507646090.

The spelling of 532131709 in words is "five hundred thirty-two million, one hundred thirty-one thousand, seven hundred nine".