20412013 has 4 divisors (see below), whose sum is σ = 20421280. Its totient is φ = 20402748.

The previous prime is 20411983. The next prime is 20412037. The reversal of 20412013 is 31021402.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 20412013 - 2¹⁷ = 20280941 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20411984 and 20412002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20412083) 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, 778 + ... + 6436.

It is an arithmetic number, because the mean of its divisors is an integer number (5105320).

Almost surely, 2^20412013 is an apocalyptic number.

It is an amenable number.

20412013 is a deficient number, since it is larger than the sum of its proper divisors (9267).

20412013 is an equidigital number, since it uses as much as digits as its factorization.

20412013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9266.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 20412013 is about 4517.9655819849. The cubic root of 20412013 is about 273.2930654871.

Adding to 20412013 its reverse (31021402), we get a palindrome (51433415).

The spelling of 20412013 in words is "twenty million, four hundred twelve thousand, thirteen".