2102031979 has 2 divisors, whose sum is σ = 2102031980. Its totient is φ = 2102031978.

The previous prime is 2102031977. The next prime is 2102031983. The reversal of 2102031979 is 9791302012.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2102031979 - 2¹ = 2102031977 is a prime.

Together with 2102031977, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2102031977) 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, 1051015989 + 1051015990.

It is an arithmetic number, because the mean of its divisors is an integer number (1051015990).

Almost surely, 2^2102031979 is an apocalyptic number.

2102031979 is a deficient number, since it is larger than the sum of its proper divisors (1).

2102031979 is an equidigital number, since it uses as much as digits as its factorization.

2102031979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6804, while the sum is 34.

The square root of 2102031979 is about 45847.9222975262. The cubic root of 2102031979 is about 1280.9920651695.

The spelling of 2102031979 in words is "two billion, one hundred two million, thirty-one thousand, nine hundred seventy-nine".