13303121331 has 4 divisors (see below), whose sum is σ = 17737495112. Its totient is φ = 8868747552.

The previous prime is 13303121327. The next prime is 13303121371. The reversal of 13303121331 is 13312130331.

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

It is not a de Polignac number, because 13303121331 - 2² = 13303121327 is a prime.

It is a super-2 number, since 2×13303121331² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13303121298 and 13303121307.

It is not an unprimeable number, because it can be changed into a prime (13303121311) 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, 2217186886 + ... + 2217186891.

It is an arithmetic number, because the mean of its divisors is an integer number (4434373778).

Almost surely, 2^13303121331 is an apocalyptic number.

13303121331 is a deficient number, since it is larger than the sum of its proper divisors (4434373781).

13303121331 is an equidigital number, since it uses as much as digits as its factorization.

13303121331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4434373780.

The product of its (nonzero) digits is 486, while the sum is 21.

Adding to 13303121331 its reverse (13312130331), we get a palindrome (26615251662).

The spelling of 13303121331 in words is "thirteen billion, three hundred three million, one hundred twenty-one thousand, three hundred thirty-one".