65240202231 has 6 divisors (see below), whose sum is σ = 94235847680. Its totient is φ = 43493468148.

The previous prime is 65240202227. The next prime is 65240202257. The reversal of 65240202231 is 13220204256.

It is a happy number.

65240202231 is a `hidden beast` number, since 652 + 4 + 0 + 2 + 0 + 2 + 2 + 3 + 1 = 666.

It is not a de Polignac number, because 65240202231 - 2² = 65240202227 is a prime.

It is a super-2 number, since 2×65240202231² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 65240202195 and 65240202204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65240242231) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3624455671 + ... + 3624455688.

Almost surely, 2^65240202231 is an apocalyptic number.

65240202231 is a deficient number, since it is larger than the sum of its proper divisors (28995645449).

65240202231 is a wasteful number, since it uses less digits than its factorization.

65240202231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7248911365 (or 7248911362 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

Adding to 65240202231 its reverse (13220204256), we get a palindrome (78460406487).

The spelling of 65240202231 in words is "sixty-five billion, two hundred forty million, two hundred two thousand, two hundred thirty-one".