13231000121 has 8 divisors (see below), whose sum is σ = 13458044040. Its totient is φ = 13005194112.

The previous prime is 13231000117. The next prime is 13231000141. The reversal of 13231000121 is 12100013231.

It can be written as a sum of positive squares in 4 ways, for example, as 3926275600 + 9304724521 = 62660^2 + 96461^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13231000121 - 2² = 13231000117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13231000096 and 13231000105.

It is not an unprimeable number, because it can be changed into a prime (13231000141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 287906 + ... + 330683.

It is an arithmetic number, because the mean of its divisors is an integer number (1682255505).

Almost surely, 2^13231000121 is an apocalyptic number.

It is an amenable number.

13231000121 is a deficient number, since it is larger than the sum of its proper divisors (227043919).

13231000121 is an equidigital number, since it uses as much as digits as its factorization.

13231000121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 618955.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 13231000121 its reverse (12100013231), we get a palindrome (25331013352).

The spelling of 13231000121 in words is "thirteen billion, two hundred thirty-one million, one hundred twenty-one", and thus it is an aban number.