34521320431 has 4 divisors (see below), whose sum is σ = 37176806632. Its totient is φ = 31865834232.

The previous prime is 34521320423. The next prime is 34521320479. The reversal of 34521320431 is 13402312543.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13402312543 = 23 ⋅582709241.

It is a cyclic number.

It is not a de Polignac number, because 34521320431 - 2³ = 34521320423 is a prime.

It is a super-2 number, since 2×34521320431² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 34521320431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34521320831) 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, 1327743081 + ... + 1327743106.

It is an arithmetic number, because the mean of its divisors is an integer number (9294201658).

Almost surely, 2^34521320431 is an apocalyptic number.

34521320431 is a deficient number, since it is larger than the sum of its proper divisors (2655486201).

34521320431 is a wasteful number, since it uses less digits than its factorization.

34521320431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2655486200.

The product of its (nonzero) digits is 8640, while the sum is 28.

Adding to 34521320431 its reverse (13402312543), we get a palindrome (47923632974).

The spelling of 34521320431 in words is "thirty-four billion, five hundred twenty-one million, three hundred twenty thousand, four hundred thirty-one".