20412313 has 4 divisors (see below), whose sum is σ = 20423268. Its totient is φ = 20401360.

The previous prime is 20412277. The next prime is 20412319. The reversal of 20412313 is 31321402.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 1982464 + 18429849 = 1408^2 + 4293^2 .

It is a cyclic number.

It is not a de Polignac number, because 20412313 - 2⁹ = 20411801 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (20412319) 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, 1906 + ... + 6667.

It is an arithmetic number, because the mean of its divisors is an integer number (5105817).

Almost surely, 2^20412313 is an apocalyptic number.

It is an amenable number.

20412313 is a deficient number, since it is larger than the sum of its proper divisors (10955).

20412313 is an equidigital number, since it uses as much as digits as its factorization.

20412313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10954.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 20412313 is about 4517.9987826470. The cubic root of 20412313 is about 273.2944043640.

Adding to 20412313 its reverse (31321402), we get a palindrome (51733715).

The spelling of 20412313 in words is "twenty million, four hundred twelve thousand, three hundred thirteen".