2120031313643 has 2 divisors, whose sum is σ = 2120031313644. Its totient is φ = 2120031313642.

The previous prime is 2120031313637. The next prime is 2120031313651. The reversal of 2120031313643 is 3463131300212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2120031313643 - 2¹⁶ = 2120031248107 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (2120031313613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060015656821 + 1060015656822.

It is an arithmetic number, because the mean of its divisors is an integer number (1060015656822).

Almost surely, 2^{2120031313643} is an apocalyptic number.

2120031313643 is a deficient number, since it is larger than the sum of its proper divisors (1).

2120031313643 is an equidigital number, since it uses as much as digits as its factorization.

2120031313643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 29.

Adding to 2120031313643 its reverse (3463131300212), we get a palindrome (5583162613855).

The spelling of 2120031313643 in words is "two trillion, one hundred twenty billion, thirty-one million, three hundred thirteen thousand, six hundred forty-three".