65311228 has 12 divisors (see below), whose sum is σ = 114405480. Its totient is φ = 32623952.

The previous prime is 65311223. The next prime is 65311231. The reversal of 65311228 is 82211356.

It is a junction number, because it is equal to n+sod(n) for n = 65311196 and 65311205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65311223) 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, 2926 + ... + 11797.

It is an arithmetic number, because the mean of its divisors is an integer number (9533790).

Almost surely, 2^65311228 is an apocalyptic number.

It is an amenable number.

65311228 is a deficient number, since it is larger than the sum of its proper divisors (49094252).

65311228 is a wasteful number, since it uses less digits than its factorization.

65311228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15836 (or 15834 counting only the distinct ones).

The product of its digits is 2880, while the sum is 28.

The square root of 65311228 is about 8081.5362400969. The cubic root of 65311228 is about 402.7132786827.

It can be divided in two parts, 653 and 11228, that added together give a square (11881 = 109²).

The spelling of 65311228 in words is "sixty-five million, three hundred eleven thousand, two hundred twenty-eight".