431105311613 has 4 divisors (see below), whose sum is σ = 431203361340. Its totient is φ = 431007261888.

The previous prime is 431105311607. The next prime is 431105311627. The reversal of 431105311613 is 316113501134.

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 235552974244 + 195552337369 = 485338^2 + 442213^2 .

It is a cyclic number.

It is not a de Polignac number, because 431105311613 - 2⁴ = 431105311597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431105011613) 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, 49018268 + ... + 49027061.

It is an arithmetic number, because the mean of its divisors is an integer number (107800840335).

Almost surely, 2^431105311613 is an apocalyptic number.

It is an amenable number.

431105311613 is a deficient number, since it is larger than the sum of its proper divisors (98049727).

431105311613 is an equidigital number, since it uses as much as digits as its factorization.

431105311613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98049726.

The product of its (nonzero) digits is 3240, while the sum is 29.

Adding to 431105311613 its reverse (316113501134), we get a palindrome (747218812747).

The spelling of 431105311613 in words is "four hundred thirty-one billion, one hundred five million, three hundred eleven thousand, six hundred thirteen".