3131223210420 has 48 divisors (see below), whose sum is σ = 8778767195520. Its totient is φ = 833912646016.

The previous prime is 3131223210377. The next prime is 3131223210481. The reversal of 3131223210420 is 240123221313.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33709800 + ... + 33802559.

It is an arithmetic number, because the mean of its divisors is an integer number (182890983240).

Almost surely, 2^{3131223210420} is an apocalyptic number.

3131223210420 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3131223210420 is an abundant number, since it is smaller than the sum of its proper divisors (5647543985100).

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

3131223210420 is a wasteful number, since it uses less digits than its factorization.

3131223210420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67513144 (or 67513142 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 3131223210420 its reverse (240123221313), we get a palindrome (3371346431733).

The spelling of 3131223210420 in words is "three trillion, one hundred thirty-one billion, two hundred twenty-three million, two hundred ten thousand, four hundred twenty".