2031021353 has 4 divisors (see below), whose sum is σ = 2085913860. Its totient is φ = 1976128848.

The previous prime is 2031021347. The next prime is 2031021361. The reversal of 2031021353 is 3531201302.

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 1848312064 + 182709289 = 42992^2 + 13517^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2031021353 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2031021373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27446198 + ... + 27446271.

It is an arithmetic number, because the mean of its divisors is an integer number (521478465).

Almost surely, 2^2031021353 is an apocalyptic number.

It is an amenable number.

2031021353 is a deficient number, since it is larger than the sum of its proper divisors (54892507).

2031021353 is an equidigital number, since it uses as much as digits as its factorization.

2031021353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54892506.

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 2031021353 is about 45066.8542611973. The cubic root of 2031021353 is about 1266.4017338417.

Adding to 2031021353 its reverse (3531201302), we get a palindrome (5562222655).

The spelling of 2031021353 in words is "two billion, thirty-one million, twenty-one thousand, three hundred fifty-three".