3121321131203 has 32 divisors (see below), whose sum is σ = 3597502713600. Its totient is φ = 2685764796480.

The previous prime is 3121321131199. The next prime is 3121321131277. The reversal of 3121321131203 is 3021311231213.

It is not a de Polignac number, because 3121321131203 - 2² = 3121321131199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3121321131703) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 85163600 + ... + 85200242.

It is an arithmetic number, because the mean of its divisors is an integer number (112421959800).

Almost surely, 2^{3121321131203} is an apocalyptic number.

3121321131203 is a deficient number, since it is larger than the sum of its proper divisors (476181582397).

3121321131203 is a wasteful number, since it uses less digits than its factorization.

3121321131203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37840 (or 37802 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 3121321131203 its reverse (3021311231213), we get a palindrome (6142632362416).

The spelling of 3121321131203 in words is "three trillion, one hundred twenty-one billion, three hundred twenty-one million, one hundred thirty-one thousand, two hundred three".