20131013033 has 2 divisors, whose sum is σ = 20131013034. Its totient is φ = 20131013032.

The previous prime is 20131013011. The next prime is 20131013039. The reversal of 20131013033 is 33031013102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11796783769 + 8334229264 = 108613^2 + 91292^2 .

It is a cyclic number.

It is not a de Polignac number, because 20131013033 - 2⁸ = 20131012777 is a prime.

It is not a weakly prime, because it can be changed into another prime (20131013039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10065506516 + 10065506517.

It is an arithmetic number, because the mean of its divisors is an integer number (10065506517).

Almost surely, 2^20131013033 is an apocalyptic number.

It is an amenable number.

20131013033 is a deficient number, since it is larger than the sum of its proper divisors (1).

20131013033 is an equidigital number, since it uses as much as digits as its factorization.

20131013033 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 162, while the sum is 17.

Adding to 20131013033 its reverse (33031013102), we get a palindrome (53162026135).

The spelling of 20131013033 in words is "twenty billion, one hundred thirty-one million, thirteen thousand, thirty-three".