20120313 has 4 divisors (see below), whose sum is σ = 26827088. Its totient is φ = 13413540.

The previous prime is 20120281. The next prime is 20120323. The reversal of 20120313 is 31302102.

It is a happy number.

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 not a de Polignac number, because 20120313 - 2⁵ = 20120281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20120323) 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, 3353383 + ... + 3353388.

It is an arithmetic number, because the mean of its divisors is an integer number (6706772).

Almost surely, 2^20120313 is an apocalyptic number.

It is an amenable number.

20120313 is a deficient number, since it is larger than the sum of its proper divisors (6706775).

20120313 is an equidigital number, since it uses as much as digits as its factorization.

20120313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6706774.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 20120313 is about 4485.5671882160. The cubic root of 20120313 is about 271.9849733985.

Adding to 20120313 its reverse (31302102), we get a palindrome (51422415).

The spelling of 20120313 in words is "twenty million, one hundred twenty thousand, three hundred thirteen".