1020320113 has 2 divisors, whose sum is σ = 1020320114. Its totient is φ = 1020320112.

The previous prime is 1020320107. The next prime is 1020320117. The reversal of 1020320113 is 3110230201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1019652624 + 667489 = 31932^2 + 817^2 .

It is a cyclic number.

It is not a de Polignac number, because 1020320113 - 2¹³ = 1020311921 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1020320093 and 1020320102.

It is not a weakly prime, because it can be changed into another prime (1020320117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510160056 + 510160057.

It is an arithmetic number, because the mean of its divisors is an integer number (510160057).

Almost surely, 2^1020320113 is an apocalyptic number.

It is an amenable number.

1020320113 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020320113 is an equidigital number, since it uses as much as digits as its factorization.

1020320113 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 1020320113 is about 31942.4500156140. The cubic root of 1020320113 is about 1006.7280034529.

Adding to 1020320113 its reverse (3110230201), we get a palindrome (4130550314).

The spelling of 1020320113 in words is "one billion, twenty million, three hundred twenty thousand, one hundred thirteen".