3121612020424 has 64 divisors (see below), whose sum is σ = 6300491040000. Its totient is φ = 1445404746240.

The previous prime is 3121612020421. The next prime is 3121612020451. The reversal of 3121612020424 is 4240202161213.

It is a junction number, because it is equal to n+sod(n) for n = 3121612020392 and 3121612020401.

It is not an unprimeable number, because it can be changed into a prime (3121612020421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1468252 + ... + 2898100.

It is an arithmetic number, because the mean of its divisors is an integer number (98445172500).

Almost surely, 2^{3121612020424} is an apocalyptic number.

It is an amenable number.

3121612020424 is an abundant number, since it is smaller than the sum of its proper divisors (3178879019576).

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

3121612020424 is a wasteful number, since it uses less digits than its factorization.

3121612020424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1430198 (or 1430194 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 3121612020424 its reverse (4240202161213), we get a palindrome (7361814181637).

The spelling of 3121612020424 in words is "three trillion, one hundred twenty-one billion, six hundred twelve million, twenty thousand, four hundred twenty-four".