2120984731 has 2 divisors, whose sum is σ = 2120984732. Its totient is φ = 2120984730.

The previous prime is 2120984729. The next prime is 2120984771. The reversal of 2120984731 is 1374890212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2120984731 - 2¹ = 2120984729 is a prime.

It is a super-2 number, since 2×2120984731² = 8997152458270284722, which contains 22 as substring.

Together with 2120984729, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2120984771) 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, 1060492365 + 1060492366.

It is an arithmetic number, because the mean of its divisors is an integer number (1060492366).

Almost surely, 2^2120984731 is an apocalyptic number.

2120984731 is a deficient number, since it is larger than the sum of its proper divisors (1).

2120984731 is an equidigital number, since it uses as much as digits as its factorization.

2120984731 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 2120984731 is about 46054.1499867276. The cubic root of 2120984731 is about 1284.8305289078.

The spelling of 2120984731 in words is "two billion, one hundred twenty million, nine hundred eighty-four thousand, seven hundred thirty-one".