20031033313 has 2 divisors, whose sum is σ = 20031033314. Its totient is φ = 20031033312.

The previous prime is 20031033307. The next prime is 20031033317. The reversal of 20031033313 is 31333013002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19468062784 + 562970529 = 139528^2 + 23727^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20031033313 is a prime.

It is not a weakly prime, because it can be changed into another prime (20031033317) 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, 10015516656 + 10015516657.

It is an arithmetic number, because the mean of its divisors is an integer number (10015516657).

Almost surely, 2^20031033313 is an apocalyptic number.

It is an amenable number.

20031033313 is a deficient number, since it is larger than the sum of its proper divisors (1).

20031033313 is an equidigital number, since it uses as much as digits as its factorization.

20031033313 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 486, while the sum is 19.

Adding to 20031033313 its reverse (31333013002), we get a palindrome (51364046315).

The spelling of 20031033313 in words is "twenty billion, thirty-one million, thirty-three thousand, three hundred thirteen".