13312120311 has 16 divisors (see below), whose sum is σ = 22539040000. Its totient is φ = 7606925784.

The previous prime is 13312120303. The next prime is 13312120313. The reversal of 13312120311 is 11302121331.

13312120311 is a `hidden beast` number, since 1 + 331 + 2 + 1 + 20 + 311 = 666.

It is not a de Polignac number, because 13312120311 - 2³ = 13312120303 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 (13312120313) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35217061 + ... + 35217438.

It is an arithmetic number, because the mean of its divisors is an integer number (1408690000).

Almost surely, 2^13312120311 is an apocalyptic number.

13312120311 is a deficient number, since it is larger than the sum of its proper divisors (9226919689).

13312120311 is an equidigital number, since it uses as much as digits as its factorization.

13312120311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70434515 (or 70434509 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 13312120311 its reverse (11302121331), we get a palindrome (24614241642).

The spelling of 13312120311 in words is "thirteen billion, three hundred twelve million, one hundred twenty thousand, three hundred eleven".