13673221031 has 4 divisors (see below), whose sum is σ = 13904970600. Its totient is φ = 13441471464.

The previous prime is 13673221027. The next prime is 13673221043. The reversal of 13673221031 is 13012237631.

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 13673221031 - 2² = 13673221027 is a prime.

It is a super-2 number, since 2×13673221031² (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 = 13673220985 and 13673221003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13673220031) 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, 115874696 + ... + 115874813.

It is an arithmetic number, because the mean of its divisors is an integer number (3476242650).

Almost surely, 2^13673221031 is an apocalyptic number.

13673221031 is a deficient number, since it is larger than the sum of its proper divisors (231749569).

13673221031 is an equidigital number, since it uses as much as digits as its factorization.

13673221031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231749568.

The product of its (nonzero) digits is 4536, while the sum is 29.

Adding to 13673221031 its reverse (13012237631), we get a palindrome (26685458662).

The spelling of 13673221031 in words is "thirteen billion, six hundred seventy-three million, two hundred twenty-one thousand, thirty-one".