331634251313 has 4 divisors (see below), whose sum is σ = 331638547968. Its totient is φ = 331629954660.

The previous prime is 331634251241. The next prime is 331634251343. The reversal of 331634251313 is 313152436133.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 313152436133 = 26777 ⋅11694829.

It is a cyclic number.

It is not a de Polignac number, because 331634251313 - 2¹⁰ = 331634250289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (331634251343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2030393 + ... + 2187638.

It is an arithmetic number, because the mean of its divisors is an integer number (82909636992).

Almost surely, 2^331634251313 is an apocalyptic number.

It is an amenable number.

331634251313 is a deficient number, since it is larger than the sum of its proper divisors (4296655).

331634251313 is an equidigital number, since it uses as much as digits as its factorization.

331634251313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4296654.

The product of its digits is 58320, while the sum is 35.

Adding to 331634251313 its reverse (313152436133), we get a palindrome (644786687446).

The spelling of 331634251313 in words is "three hundred thirty-one billion, six hundred thirty-four million, two hundred fifty-one thousand, three hundred thirteen".