2031003223021 has 4 divisors (see below), whose sum is σ = 2031083344732. Its totient is φ = 2030923101312.

The previous prime is 2031003222971. The next prime is 2031003223033. The reversal of 2031003223021 is 1203223001302.

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 199281888100 + 1831721334921 = 446410^2 + 1353411^2 .

It is a cyclic number.

It is not a de Polignac number, because 2031003223021 - 2³⁵ = 1996643484653 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 2031003223021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2031003223091) 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, 40022820 + ... + 40073533.

It is an arithmetic number, because the mean of its divisors is an integer number (507770836183).

Almost surely, 2^{2031003223021} is an apocalyptic number.

It is an amenable number.

2031003223021 is a deficient number, since it is larger than the sum of its proper divisors (80121711).

2031003223021 is an equidigital number, since it uses as much as digits as its factorization.

2031003223021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80121710.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 2031003223021 its reverse (1203223001302), we get a palindrome (3234226224323).

The spelling of 2031003223021 in words is "two trillion, thirty-one billion, three million, two hundred twenty-three thousand, twenty-one".