2031200100031 has 4 divisors (see below), whose sum is σ = 2031340014000. Its totient is φ = 2031060186064.

The previous prime is 2031200100029. The next prime is 2031200100109. The reversal of 2031200100031 is 1300010021302.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2031200100031 - 2¹ = 2031200100029 is a prime.

It is a super-2 number, since 2×2031200100031² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2031200099984 and 2031200100020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2031200100131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69935206 + ... + 69964243.

It is an arithmetic number, because the mean of its divisors is an integer number (507835003500).

Almost surely, 2^{2031200100031} is an apocalyptic number.

2031200100031 is a deficient number, since it is larger than the sum of its proper divisors (139913969).

2031200100031 is a wasteful number, since it uses less digits than its factorization.

2031200100031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139913968.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 2031200100031 its reverse (1300010021302), we get a palindrome (3331210121333).

The spelling of 2031200100031 in words is "two trillion, thirty-one billion, two hundred million, one hundred thousand, thirty-one".