65730030031 has 4 divisors (see below), whose sum is σ = 65732604192. Its totient is φ = 65727455872.

The previous prime is 65730029971. The next prime is 65730030089. The reversal of 65730030031 is 13003003756.

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-65730030031 is a prime.

It is a super-2 number, since 2×65730030031² (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 (65730030731) 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, 1248391 + ... + 1299976.

It is an arithmetic number, because the mean of its divisors is an integer number (16433151048).

Almost surely, 2^65730030031 is an apocalyptic number.

65730030031 is a deficient number, since it is larger than the sum of its proper divisors (2574161).

65730030031 is a wasteful number, since it uses less digits than its factorization.

65730030031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2574160.

The product of its (nonzero) digits is 5670, while the sum is 28.

Adding to 65730030031 its reverse (13003003756), we get a palindrome (78733033787).

The spelling of 65730030031 in words is "sixty-five billion, seven hundred thirty million, thirty thousand, thirty-one".