310131421220 has 48 divisors (see below), whose sum is σ = 686103600000. Its totient is φ = 117429212160.

The previous prime is 310131421217. The next prime is 310131421267. The reversal of 310131421220 is 22124131013.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 310131421192 and 310131421201.

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, 147905 + ... + 801335.

It is an arithmetic number, because the mean of its divisors is an integer number (14293825000).

Almost surely, 2^310131421220 is an apocalyptic number.

It is an amenable number.

310131421220 is an abundant number, since it is smaller than the sum of its proper divisors (375972178780).

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

310131421220 is a wasteful number, since it uses less digits than its factorization.

310131421220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 654708 (or 654706 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 310131421220 its reverse (22124131013), we get a palindrome (332255552233).

The spelling of 310131421220 in words is "three hundred ten billion, one hundred thirty-one million, four hundred twenty-one thousand, two hundred twenty".