65392313231 has 4 divisors (see below), whose sum is σ = 74734072272. Its totient is φ = 56050554192.

The previous prime is 65392313201. The next prime is 65392313293. The reversal of 65392313231 is 13231329356.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65392313231 is a prime.

It is a super-2 number, since 2×65392313231² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65392313201) 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, 4670879510 + ... + 4670879523.

It is an arithmetic number, because the mean of its divisors is an integer number (18683518068).

Almost surely, 2^65392313231 is an apocalyptic number.

65392313231 is a deficient number, since it is larger than the sum of its proper divisors (9341759041).

65392313231 is an equidigital number, since it uses as much as digits as its factorization.

65392313231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9341759040.

The product of its digits is 87480, while the sum is 38.

The spelling of 65392313231 in words is "sixty-five billion, three hundred ninety-two million, three hundred thirteen thousand, two hundred thirty-one".