51031304 has 8 divisors (see below), whose sum is σ = 95683710. Its totient is φ = 25515648.

The previous prime is 51031291. The next prime is 51031313. The reversal of 51031304 is 40313015.

It can be written as a sum of positive squares in only one way, i.e., 50438404 + 592900 = 7102^2 + 770^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3189449 + ... + 3189464.

Almost surely, 2^51031304 is an apocalyptic number.

It is an amenable number.

51031304 is a deficient number, since it is larger than the sum of its proper divisors (44652406).

51031304 is a wasteful number, since it uses less digits than its factorization.

51031304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6378919 (or 6378915 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 51031304 is about 7143.6198107122. The cubic root of 51031304 is about 370.9188363656.

Adding to 51031304 its reverse (40313015), we get a palindrome (91344319).

The spelling of 51031304 in words is "fifty-one million, thirty-one thousand, three hundred four".