13121000331 has 8 divisors (see below), whose sum is σ = 17506344000. Its totient is φ = 8741495112.

The previous prime is 13121000329. The next prime is 13121000339. The reversal of 13121000331 is 13300012131.

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

It is not a de Polignac number, because 13121000331 - 2¹ = 13121000329 is a prime.

It is a super-2 number, since 2×13121000331² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13121000331.

It is not an unprimeable number, because it can be changed into a prime (13121000339) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1454365 + ... + 1463358.

It is an arithmetic number, because the mean of its divisors is an integer number (2188293000).

Almost surely, 2^13121000331 is an apocalyptic number.

13121000331 is a deficient number, since it is larger than the sum of its proper divisors (4385343669).

13121000331 is a wasteful number, since it uses less digits than its factorization.

13121000331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2919225.

The product of its (nonzero) digits is 54, while the sum is 15.

Adding to 13121000331 its reverse (13300012131), we get a palindrome (26421012462).

The spelling of 13121000331 in words is "thirteen billion, one hundred twenty-one million, three hundred thirty-one", and thus it is an aban number.