3131243421204 has 96 divisors (see below), whose sum is σ = 7710650236800. Its totient is φ = 987549212160.

The previous prime is 3131243421157. The next prime is 3131243421287. The reversal of 3131243421204 is 4021243421313.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5436159 + ... + 5984505.

It is an arithmetic number, because the mean of its divisors is an integer number (80319273300).

Almost surely, 2^{3131243421204} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3131243421204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3855325118400).

3131243421204 is an abundant number, since it is smaller than the sum of its proper divisors (4579406815596).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3131243421204 is a wasteful number, since it uses less digits than its factorization.

3131243421204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 548713 (or 548711 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 30.

Adding to 3131243421204 its reverse (4021243421313), we get a palindrome (7152486842517).

The spelling of 3131243421204 in words is "three trillion, one hundred thirty-one billion, two hundred forty-three million, four hundred twenty-one thousand, two hundred four".