265200311231 has 2 divisors, whose sum is σ = 265200311232. Its totient is φ = 265200311230.

The previous prime is 265200311203. The next prime is 265200311263. The reversal of 265200311231 is 132113002562.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-265200311231 is a prime.

It is a super-2 number, since 2×265200311231² (a number of 24 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 265200311231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (265200314231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132600155615 + 132600155616.

It is an arithmetic number, because the mean of its divisors is an integer number (132600155616).

Almost surely, 2^265200311231 is an apocalyptic number.

265200311231 is a deficient number, since it is larger than the sum of its proper divisors (1).

265200311231 is an equidigital number, since it uses as much as digits as its factorization.

265200311231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 26.

Adding to 265200311231 its reverse (132113002562), we get a palindrome (397313313793).

The spelling of 265200311231 in words is "two hundred sixty-five billion, two hundred million, three hundred eleven thousand, two hundred thirty-one".