65240312 has 32 divisors (see below), whose sum is σ = 126316800. Its totient is φ = 31573344.

The previous prime is 65240257. The next prime is 65240317. The reversal of 65240312 is 21304256.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65240317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30593 + ... + 32655.

It is an arithmetic number, because the mean of its divisors is an integer number (3947400).

Almost surely, 2^65240312 is an apocalyptic number.

It is an amenable number.

65240312 is a deficient number, since it is larger than the sum of its proper divisors (61076488).

65240312 is a wasteful number, since it uses less digits than its factorization.

65240312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2195 (or 2191 counting only the distinct ones).

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

The square root of 65240312 is about 8077.1475162956. The cubic root of 65240312 is about 402.5674683398.

Adding to 65240312 its reverse (21304256), we get a palindrome (86544568).

The spelling of 65240312 in words is "sixty-five million, two hundred forty thousand, three hundred twelve".