13313861381 has 4 divisors (see below), whose sum is σ = 13314215712. Its totient is φ = 13313507052.

The previous prime is 13313861357. The next prime is 13313861413. The reversal of 13313861381 is 18316831331.

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.

It is a cyclic number.

It is not a de Polignac number, because 13313861381 - 2¹⁸ = 13313599237 is a prime.

It is a super-2 number, since 2×13313861381² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13313861311) 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, 113075 + ... + 198528.

It is an arithmetic number, because the mean of its divisors is an integer number (3328553928).

Almost surely, 2^13313861381 is an apocalyptic number.

It is an amenable number.

13313861381 is a deficient number, since it is larger than the sum of its proper divisors (354331).

13313861381 is an equidigital number, since it uses as much as digits as its factorization.

13313861381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354330.

The product of its digits is 31104, while the sum is 38.

The spelling of 13313861381 in words is "thirteen billion, three hundred thirteen million, eight hundred sixty-one thousand, three hundred eighty-one".