2113321939 has 2 divisors, whose sum is σ = 2113321940. Its totient is φ = 2113321938.

The previous prime is 2113321937. The next prime is 2113321943. The reversal of 2113321939 is 9391233112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2113321939 - 2¹ = 2113321937 is a prime.

It is a super-2 number, since 2×2113321939² = 8932259235717439442, which contains 22 as substring.

Together with 2113321937, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2113321937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1056660969 + 1056660970.

It is an arithmetic number, because the mean of its divisors is an integer number (1056660970).

Almost surely, 2^2113321939 is an apocalyptic number.

2113321939 is a deficient number, since it is larger than the sum of its proper divisors (1).

2113321939 is an equidigital number, since it uses as much as digits as its factorization.

2113321939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8748, while the sum is 34.

The square root of 2113321939 is about 45970.8814250934. The cubic root of 2113321939 is about 1283.2813633346.

The spelling of 2113321939 in words is "two billion, one hundred thirteen million, three hundred twenty-one thousand, nine hundred thirty-nine".