2031321311 has 2 divisors, whose sum is σ = 2031321312. Its totient is φ = 2031321310.

The previous prime is 2031321139. The next prime is 2031321323. The reversal of 2031321311 is 1131231302.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2031321311 - 2¹⁴ = 2031304927 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2031321311.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2031321511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1015660655 + 1015660656.

It is an arithmetic number, because the mean of its divisors is an integer number (1015660656).

Almost surely, 2^2031321311 is an apocalyptic number.

2031321311 is a deficient number, since it is larger than the sum of its proper divisors (1).

2031321311 is an equidigital number, since it uses as much as digits as its factorization.

2031321311 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 2031321311 is about 45070.1820608704. The cubic root of 2031321311 is about 1266.4640749936.

Adding to 2031321311 its reverse (1131231302), we get a palindrome (3162552613).

Subtracting from 2031321311 its reverse (1131231302), we obtain a palindrome (900090009).

The spelling of 2031321311 in words is "two billion, thirty-one million, three hundred twenty-one thousand, three hundred eleven".