1020031513 has 2 divisors, whose sum is σ = 1020031514. Its totient is φ = 1020031512.

The previous prime is 1020031499. The next prime is 1020031567. The reversal of 1020031513 is 3151300201.

1020031513 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 689955289 + 330076224 = 26267^2 + 18168^2 .

It is a cyclic number.

It is not a de Polignac number, because 1020031513 - 2²⁵ = 986477081 is a prime.

It is not a weakly prime, because it can be changed into another prime (1020031583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510015756 + 510015757.

It is an arithmetic number, because the mean of its divisors is an integer number (510015757).

Almost surely, 2^1020031513 is an apocalyptic number.

It is an amenable number.

1020031513 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020031513 is an equidigital number, since it uses as much as digits as its factorization.

1020031513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90, while the sum is 16.

The square root of 1020031513 is about 31937.9321966842. The cubic root of 1020031513 is about 1006.6330760225.

Adding to 1020031513 its reverse (3151300201), we get a palindrome (4171331714).

The spelling of 1020031513 in words is "one billion, twenty million, thirty-one thousand, five hundred thirteen".