34520431 has 4 divisors (see below), whose sum is σ = 37658664. Its totient is φ = 31382200.

The previous prime is 34520429. The next prime is 34520441. The reversal of 34520431 is 13402543.

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 34520431 - 2¹ = 34520429 is a prime.

It is a super-2 number, since 2×34520431² = 2383320312851522, which contains 22 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34520441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1569100 + ... + 1569121.

It is an arithmetic number, because the mean of its divisors is an integer number (9414666).

Almost surely, 2^34520431 is an apocalyptic number.

34520431 is a deficient number, since it is larger than the sum of its proper divisors (3138233).

34520431 is a wasteful number, since it uses less digits than its factorization.

34520431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3138232.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 34520431 is about 5875.4090070394. The cubic root of 34520431 is about 325.6057531024.

Adding to 34520431 its reverse (13402543), we get a palindrome (47922974).

The spelling of 34520431 in words is "thirty-four million, five hundred twenty thousand, four hundred thirty-one".