2031123102012 has 144 divisors (see below), whose sum is σ = 5343129093120. Its totient is φ = 674661949632.

The previous prime is 2031123101983. The next prime is 2031123102017. The reversal of 2031123102012 is 2102013211302.

2031123102012 is a `hidden beast` number, since 20 + 311 + 2 + 310 + 20 + 1 + 2 = 666.

It is a super-2 number, since 2×2031123102012² (a number of 25 digits) contains 22 as substring.

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 (2031123102017) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 359678973 + ... + 359684619.

Almost surely, 2^{2031123102012} 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 2031123102012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2671564546560).

2031123102012 is an abundant number, since it is smaller than the sum of its proper divisors (3312005991108).

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

2031123102012 is a wasteful number, since it uses less digits than its factorization.

2031123102012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6902 (or 6888 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 2031123102012 its reverse (2102013211302), we get a palindrome (4133136313314).

It can be divided in two parts, 203112 and 3102012, that added together give a square (3305124 = 1818²).

The spelling of 2031123102012 in words is "two trillion, thirty-one billion, one hundred twenty-three million, one hundred two thousand, twelve".