20613113 has 8 divisors (see below), whose sum is σ = 21377280. Its totient is φ = 19852560.

The previous prime is 20613097. The next prime is 20613127. The reversal of 20613113 is 31131602.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20613113 - 2⁴ = 20613097 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20613091 and 20613100.

It is not an unprimeable number, because it can be changed into a prime (20613193) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17018 + ... + 18188.

It is an arithmetic number, because the mean of its divisors is an integer number (2672160).

Almost surely, 2^20613113 is an apocalyptic number.

It is an amenable number.

20613113 is a deficient number, since it is larger than the sum of its proper divisors (764167).

20613113 is a wasteful number, since it uses less digits than its factorization.

20613113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1807.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 20613113 is about 4540.1666268982. The cubic root of 20613113 is about 274.1876323288.

Adding to 20613113 its reverse (31131602), we get a palindrome (51744715).

The spelling of 20613113 in words is "twenty million, six hundred thirteen thousand, one hundred thirteen".