34520013 has 80 divisors (see below), whose sum is σ = 62099136. Its totient is φ = 18869760.

The previous prime is 34519999. The next prime is 34520023. The reversal of 34520013 is 31002543.

It is not a de Polignac number, because 34520013 - 2⁵ = 34519981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34520023) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 651295 + ... + 651347.

Almost surely, 2^34520013 is an apocalyptic number.

34520013 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

It is an amenable number.

34520013 is a deficient number, since it is larger than the sum of its proper divisors (27579123).

34520013 is a wasteful number, since it uses less digits than its factorization.

34520013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136 (or 127 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 34520013 is about 5875.3734349401. The cubic root of 34520013 is about 325.6044388686.

Adding to 34520013 its reverse (31002543), we get a palindrome (65522556).

The spelling of 34520013 in words is "thirty-four million, five hundred twenty thousand, thirteen".