32540209431 has 4 divisors (see below), whose sum is σ = 43386945912. Its totient is φ = 21693472952.

The previous prime is 32540209393. The next prime is 32540209433. The reversal of 32540209431 is 13490204523.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13490204523 = 3 ⋅4496734841.

It is a cyclic number.

It is not a de Polignac number, because 32540209431 - 2¹¹ = 32540207383 is a prime.

It is a super-2 number, since 2×32540209431² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 32540209392 and 32540209401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32540209433) 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, 5423368236 + ... + 5423368241.

It is an arithmetic number, because the mean of its divisors is an integer number (10846736478).

Almost surely, 2^32540209431 is an apocalyptic number.

32540209431 is a deficient number, since it is larger than the sum of its proper divisors (10846736481).

32540209431 is a wasteful number, since it uses less digits than its factorization.

32540209431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10846736480.

The product of its (nonzero) digits is 25920, while the sum is 33.

The spelling of 32540209431 in words is "thirty-two billion, five hundred forty million, two hundred nine thousand, four hundred thirty-one".