431155124215265 has 4 divisors (see below), whose sum is σ = 517386149058324. Its totient is φ = 344924099372208.

The previous prime is 431155124215261. The next prime is 431155124215273. The reversal of 431155124215265 is 562512421551134.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 161869945187344 + 269285179027921 = 12722812^2 + 16409911^2 .

It is a cyclic number.

It is not a de Polignac number, because 431155124215265 - 2² = 431155124215261 is a prime.

It is a super-2 number, since 2×431155124215265² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (431155124215261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43115512421522 + ... + 43115512421531.

It is an arithmetic number, because the mean of its divisors is an integer number (129346537264581).

Almost surely, 2^{431155124215265} is an apocalyptic number.

It is an amenable number.

431155124215265 is a deficient number, since it is larger than the sum of its proper divisors (86231024843059).

431155124215265 is an equidigital number, since it uses as much as digits as its factorization.

431155124215265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86231024843058.

The product of its digits is 1440000, while the sum is 47.

Adding to 431155124215265 its reverse (562512421551134), we get a palindrome (993667545766399).

The spelling of 431155124215265 in words is "four hundred thirty-one trillion, one hundred fifty-five billion, one hundred twenty-four million, two hundred fifteen thousand, two hundred sixty-five".