13322311631 has 4 divisors (see below), whose sum is σ = 13327552992. Its totient is φ = 13317070272.

The previous prime is 13322311591. The next prime is 13322311637. The reversal of 13322311631 is 13611322331.

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

It is a cyclic number.

It is not a de Polignac number, because 13322311631 - 2¹⁸ = 13322049487 is a prime.

It is a super-2 number, since 2×13322311631² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13322311631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13322311637) 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, 2616866 + ... + 2621951.

It is an arithmetic number, because the mean of its divisors is an integer number (3331888248).

Almost surely, 2^13322311631 is an apocalyptic number.

13322311631 is a deficient number, since it is larger than the sum of its proper divisors (5241361).

13322311631 is an equidigital number, since it uses as much as digits as its factorization.

13322311631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5241360.

The product of its digits is 1944, while the sum is 26.

Adding to 13322311631 its reverse (13611322331), we get a palindrome (26933633962).

The spelling of 13322311631 in words is "thirteen billion, three hundred twenty-two million, three hundred eleven thousand, six hundred thirty-one".