51231344 has 20 divisors (see below), whose sum is σ = 102463680. Its totient is φ = 24789120.

The previous prime is 51231331. The next prime is 51231377. The reversal of 51231344 is 44313215.

51231344 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

51231344 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51149 + ... + 52140.

It is an arithmetic number, because the mean of its divisors is an integer number (5123184).

Almost surely, 2^51231344 is an apocalyptic number.

It is an amenable number.

51231344 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51231344 is a wasteful number, since it uses less digits than its factorization.

51231344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103328 (or 103322 counting only the distinct ones).

The product of its digits is 1440, while the sum is 23.

The square root of 51231344 is about 7157.6074214782. The cubic root of 51231344 is about 371.4028651694.

Adding to 51231344 its reverse (44313215), we get a palindrome (95544559).

The spelling of 51231344 in words is "fifty-one million, two hundred thirty-one thousand, three hundred forty-four".