2031131211102 has 48 divisors (see below), whose sum is σ = 5057565402240. Its totient is φ = 577081167696.

The previous prime is 2031131211079. The next prime is 2031131211103. The reversal of 2031131211102 is 2011121311302.

2031131211102 is a `hidden beast` number, since 20 + 311 + 312 + 11 + 10 + 2 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2031131211103) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 45005628 + ... + 45050735.

It is an arithmetic number, because the mean of its divisors is an integer number (105365945880).

Almost surely, 2^{2031131211102} is an apocalyptic number.

2031131211102 is an abundant number, since it is smaller than the sum of its proper divisors (3026434191138).

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

2031131211102 is a wasteful number, since it uses less digits than its factorization.

2031131211102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90056557 (or 90056554 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 2031131211102 its reverse (2011121311302), we get a palindrome (4042252522404).

The spelling of 2031131211102 in words is "two trillion, thirty-one billion, one hundred thirty-one million, two hundred eleven thousand, one hundred two".