20315245333 has 2 divisors, whose sum is σ = 20315245334. Its totient is φ = 20315245332.

The previous prime is 20315245297. The next prime is 20315245337. The reversal of 20315245333 is 33354251302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13647379684 + 6667865649 = 116822^2 + 81657^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20315245333 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20315245295 and 20315245304.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20315245337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10157622666 + 10157622667.

It is an arithmetic number, because the mean of its divisors is an integer number (10157622667).

Almost surely, 2^20315245333 is an apocalyptic number.

It is an amenable number.

20315245333 is a deficient number, since it is larger than the sum of its proper divisors (1).

20315245333 is an equidigital number, since it uses as much as digits as its factorization.

20315245333 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32400, while the sum is 31.

Adding to 20315245333 its reverse (33354251302), we get a palindrome (53669496635).

The spelling of 20315245333 in words is "twenty billion, three hundred fifteen million, two hundred forty-five thousand, three hundred thirty-three".