65031530 has 16 divisors (see below), whose sum is σ = 119266344. Its totient is φ = 25521600.

The previous prime is 65031487. The next prime is 65031541. The reversal of 65031530 is 3513056.

65031530 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 64915249 + 116281 = 8057^2 + 341^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 65031496 and 65031505.

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 7 ways as a sum of consecutive naturals, for example, 60821 + ... + 61880.

Almost surely, 2^65031530 is an apocalyptic number.

65031530 is a deficient number, since it is larger than the sum of its proper divisors (54234814).

65031530 is a wasteful number, since it uses less digits than its factorization.

65031530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122761.

The product of its (nonzero) digits is 1350, while the sum is 23.

The square root of 65031530 is about 8064.2129188161. The cubic root of 65031530 is about 402.1375773924.

Adding to 65031530 its reverse (3513056), we get a palindrome (68544586).

The spelling of 65031530 in words is "sixty-five million, thirty-one thousand, five hundred thirty".