2131031311002 has 24 divisors (see below), whose sum is σ = 5036983099200. Its totient is φ = 645767063880.

The previous prime is 2131031310973. The next prime is 2131031311009. The reversal of 2131031311002 is 2001131301312.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (2131031311009) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5381392002 + ... + 5381392397.

It is an arithmetic number, because the mean of its divisors is an integer number (209874295800).

Almost surely, 2^{2131031311002} is an apocalyptic number.

2131031311002 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2131031311002 is an abundant number, since it is smaller than the sum of its proper divisors (2905951788198).

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

2131031311002 is a wasteful number, since it uses less digits than its factorization.

2131031311002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10762784418 (or 10762784415 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 2131031311002 its reverse (2001131301312), we get a palindrome (4132162612314).

The spelling of 2131031311002 in words is "two trillion, one hundred thirty-one billion, thirty-one million, three hundred eleven thousand, two".