2031321139 has 2 divisors, whose sum is σ = 2031321140. Its totient is φ = 2031321138.

The previous prime is 2031321121. The next prime is 2031321311. The reversal of 2031321139 is 9311231302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2031321139 - 2¹⁷ = 2031190067 is a prime.

It is not a weakly prime, because it can be changed into another prime (2031325139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1015660569 + 1015660570.

It is an arithmetic number, because the mean of its divisors is an integer number (1015660570).

Almost surely, 2^2031321139 is an apocalyptic number.

2031321139 is a deficient number, since it is larger than the sum of its proper divisors (1).

2031321139 is an equidigital number, since it uses as much as digits as its factorization.

2031321139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 2031321139 is about 45070.1801527351. The cubic root of 2031321139 is about 1266.4640392481.

The spelling of 2031321139 in words is "two billion, thirty-one million, three hundred twenty-one thousand, one hundred thirty-nine".