3121112500536 has 128 divisors (see below), whose sum is σ = 8154210355200. Its totient is φ = 994255395840.

The previous prime is 3121112500511. The next prime is 3121112500537. The reversal of 3121112500536 is 6350052111213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3121112500537) 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, 163510785 + ... + 163529871.

It is an arithmetic number, because the mean of its divisors is an integer number (63704768400).

Almost surely, 2^{3121112500536} 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 3121112500536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4077105177600).

3121112500536 is an abundant number, since it is smaller than the sum of its proper divisors (5033097854664).

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

3121112500536 is a wasteful number, since it uses less digits than its factorization.

3121112500536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21509 (or 21505 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 30.

Adding to 3121112500536 its reverse (6350052111213), we get a palindrome (9471164611749).

The spelling of 3121112500536 in words is "three trillion, one hundred twenty-one billion, one hundred twelve million, five hundred thousand, five hundred thirty-six".