2120031013 has 2 divisors, whose sum is σ = 2120031014. Its totient is φ = 2120031012.

The previous prime is 2120030999. The next prime is 2120031029. The reversal of 2120031013 is 3101300212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2107085409 + 12945604 = 45903^2 + 3598^2 .

It is a cyclic number.

It is not a de Polignac number, because 2120031013 - 2²¹ = 2117933861 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2120030984 and 2120031002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2120031313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060015506 + 1060015507.

It is an arithmetic number, because the mean of its divisors is an integer number (1060015507).

Almost surely, 2^2120031013 is an apocalyptic number.

It is an amenable number.

2120031013 is a deficient number, since it is larger than the sum of its proper divisors (1).

2120031013 is an equidigital number, since it uses as much as digits as its factorization.

2120031013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 2120031013 is about 46043.7945113128. The cubic root of 2120031013 is about 1284.6379218771.

Adding to 2120031013 its reverse (3101300212), we get a palindrome (5221331225).

The spelling of 2120031013 in words is "two billion, one hundred twenty million, thirty-one thousand, thirteen".