2119381931 has 2 divisors, whose sum is σ = 2119381932. Its totient is φ = 2119381930.

The previous prime is 2119381889. The next prime is 2119381937. The reversal of 2119381931 is 1391839112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2119381931 - 2¹⁸ = 2119119787 is a prime.

It is a super-2 number, since 2×2119381931² = 8983559538898577522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2119381937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1059690965 + 1059690966.

It is an arithmetic number, because the mean of its divisors is an integer number (1059690966).

Almost surely, 2^2119381931 is an apocalyptic number.

2119381931 is a deficient number, since it is larger than the sum of its proper divisors (1).

2119381931 is an equidigital number, since it uses as much as digits as its factorization.

2119381931 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11664, while the sum is 38.

The square root of 2119381931 is about 46036.7454431783. The cubic root of 2119381931 is about 1284.5068042255.

The spelling of 2119381931 in words is "two billion, one hundred nineteen million, three hundred eighty-one thousand, nine hundred thirty-one".