631344113 has 4 divisors (see below), whose sum is σ = 668482020. Its totient is φ = 594206208.

The previous prime is 631344107. The next prime is 631344127. The reversal of 631344113 is 311443136.

631344113 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 401882209 + 229461904 = 20047^2 + 15148^2 .

It is a cyclic number.

It is not a de Polignac number, because 631344113 - 2⁴ = 631344097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (631344143) 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, 18568928 + ... + 18568961.

It is an arithmetic number, because the mean of its divisors is an integer number (167120505).

Almost surely, 2^631344113 is an apocalyptic number.

It is an amenable number.

631344113 is a deficient number, since it is larger than the sum of its proper divisors (37137907).

631344113 is a wasteful number, since it uses less digits than its factorization.

631344113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37137906.

The product of its digits is 2592, while the sum is 26.

The square root of 631344113 is about 25126.5619017008. The cubic root of 631344113 is about 857.8711148804.

Adding to 631344113 its reverse (311443136), we get a palindrome (942787249).

The spelling of 631344113 in words is "six hundred thirty-one million, three hundred forty-four thousand, one hundred thirteen".