2031311310101 has 4 divisors (see below), whose sum is σ = 2031351105900. Its totient is φ = 2031271514304.

The previous prime is 2031311310097. The next prime is 2031311310103. The reversal of 2031311310101 is 1010131131302.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1140645360100 + 890665950001 = 1068010^2 + 943751^2 .

It is a cyclic number.

It is not a de Polignac number, because 2031311310101 - 2² = 2031311310097 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2031311310101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2031311310103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19821236 + ... + 19923453.

It is an arithmetic number, because the mean of its divisors is an integer number (507837776475).

Almost surely, 2^{2031311310101} is an apocalyptic number.

It is an amenable number.

2031311310101 is a deficient number, since it is larger than the sum of its proper divisors (39795799).

2031311310101 is an equidigital number, since it uses as much as digits as its factorization.

2031311310101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39795798.

The product of its (nonzero) digits is 54, while the sum is 17.

Adding to 2031311310101 its reverse (1010131131302), we get a palindrome (3041442441403).

The spelling of 2031311310101 in words is "two trillion, thirty-one billion, three hundred eleven million, three hundred ten thousand, one hundred one".