12131003031321 has 8 divisors (see below), whose sum is σ = 16174695735360. Its totient is φ = 8087322840752.

The previous prime is 12131003031239. The next prime is 12131003031347. The reversal of 12131003031321 is 12313030013121.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 12131003031321 - 2²³ = 12130994642713 is a prime.

It is a super-2 number, since 2×12131003031321² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12131003031391) 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, 566685 + ... + 4958138.

It is an arithmetic number, because the mean of its divisors is an integer number (2021836966920).

Almost surely, 2^{12131003031321} is an apocalyptic number.

It is an amenable number.

12131003031321 is a deficient number, since it is larger than the sum of its proper divisors (4043692704039).

12131003031321 is an equidigital number, since it uses as much as digits as its factorization.

12131003031321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6256735.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 12131003031321 its reverse (12313030013121), we get a palindrome (24444033044442).

The spelling of 12131003031321 in words is "twelve trillion, one hundred thirty-one billion, three million, thirty-one thousand, three hundred twenty-one".