20300613 has 4 divisors (see below), whose sum is σ = 27067488. Its totient is φ = 13533740.

The previous prime is 20300611. The next prime is 20300627. The reversal of 20300613 is 31600302.

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.

It is a cyclic number.

It is not a de Polignac number, because 20300613 - 2¹ = 20300611 is a prime.

It is a super-2 number, since 2×20300613² = 824229776351538, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20300592 and 20300601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20300611) 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, 3383433 + ... + 3383438.

It is an arithmetic number, because the mean of its divisors is an integer number (6766872).

Almost surely, 2^20300613 is an apocalyptic number.

It is an amenable number.

20300613 is a deficient number, since it is larger than the sum of its proper divisors (6766875).

20300613 is an equidigital number, since it uses as much as digits as its factorization.

20300613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6766874.

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 20300613 is about 4505.6201570927. The cubic root of 20300613 is about 272.7949862269.

Adding to 20300613 its reverse (31600302), we get a palindrome (51900915).

The spelling of 20300613 in words is "twenty million, three hundred thousand, six hundred thirteen".