2031211321 has 4 divisors (see below), whose sum is σ = 2138117200. Its totient is φ = 1924305444.

The previous prime is 2031211319. The next prime is 2031211337. The reversal of 2031211321 is 1231121302.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2031211321 - 2¹ = 2031211319 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2031211295 and 2031211304.

It is not an unprimeable number, because it can be changed into a prime (2031211921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53452911 + ... + 53452948.

It is an arithmetic number, because the mean of its divisors is an integer number (534529300).

Almost surely, 2^2031211321 is an apocalyptic number.

It is an amenable number.

2031211321 is a deficient number, since it is larger than the sum of its proper divisors (106905879).

2031211321 is a wasteful number, since it uses less digits than its factorization.

2031211321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106905878.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 2031211321 is about 45068.9618362793. The cubic root of 2031211321 is about 1266.4412161616.

Adding to 2031211321 its reverse (1231121302), we get a palindrome (3262332623).

The spelling of 2031211321 in words is "two billion, thirty-one million, two hundred eleven thousand, three hundred twenty-one".