65131312 has 20 divisors (see below), whose sum is σ = 126393696. Its totient is φ = 32513600.

The previous prime is 65131309. The next prime is 65131321. The reversal of 65131312 is 21313156.

It is a happy number.

65131312 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 8313 + ... + 14119.

Almost surely, 2^65131312 is an apocalyptic number.

It is an amenable number.

65131312 is a deficient number, since it is larger than the sum of its proper divisors (61262384).

65131312 is a wasteful number, since it uses less digits than its factorization.

65131312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6516 (or 6510 counting only the distinct ones).

The product of its digits is 540, while the sum is 22.

The square root of 65131312 is about 8070.3972640757. The cubic root of 65131312 is about 402.3431473498.

Adding to 65131312 its reverse (21313156), we get a palindrome (86444468).

The spelling of 65131312 in words is "sixty-five million, one hundred thirty-one thousand, three hundred twelve".