2031013221 has 8 divisors (see below), whose sum is σ = 2708226720. Its totient is φ = 1353904272.

The previous prime is 2031013219. The next prime is 2031013247. The reversal of 2031013221 is 1223101302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2031013221 - 2¹ = 2031013219 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2031013221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2031013211) 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 7 ways as a sum of consecutive naturals, for example, 56706 + ... + 85308.

It is an arithmetic number, because the mean of its divisors is an integer number (338528340).

Almost surely, 2^2031013221 is an apocalyptic number.

It is an amenable number.

2031013221 is a deficient number, since it is larger than the sum of its proper divisors (677213499).

2031013221 is a wasteful number, since it uses less digits than its factorization.

2031013221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52275.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 2031013221 is about 45066.7640395891. The cubic root of 2031013221 is about 1266.4000436588.

Adding to 2031013221 its reverse (1223101302), we get a palindrome (3254114523).

The spelling of 2031013221 in words is "two billion, thirty-one million, thirteen thousand, two hundred twenty-one".