641412313 has 4 divisors (see below), whose sum is σ = 641576628. Its totient is φ = 641248000.

The previous prime is 641412301. The next prime is 641412341. The reversal of 641412313 is 313214146.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 301821129 + 339591184 = 17373^2 + 18428^2 .

It is a cyclic number.

It is not a de Polignac number, because 641412313 - 2⁵ = 641412281 is a prime.

It is a super-2 number, since 2×641412313² = 822819510536019938, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (641416313) 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, 76156 + ... + 84157.

It is an arithmetic number, because the mean of its divisors is an integer number (160394157).

Almost surely, 2^641412313 is an apocalyptic number.

It is an amenable number.

641412313 is a deficient number, since it is larger than the sum of its proper divisors (164315).

641412313 is a wasteful number, since it uses less digits than its factorization.

641412313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164314.

The product of its digits is 1728, while the sum is 25.

The square root of 641412313 is about 25326.1191855365. The cubic root of 641412313 is about 862.4073136555.

Adding to 641412313 its reverse (313214146), we get a palindrome (954626459).

The spelling of 641412313 in words is "six hundred forty-one million, four hundred twelve thousand, three hundred thirteen".