20011233313 has 2 divisors, whose sum is σ = 20011233314. Its totient is φ = 20011233312.

The previous prime is 20011233293. The next prime is 20011233343. The reversal of 20011233313 is 31333211002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13840816609 + 6170416704 = 117647^2 + 78552^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20011233313 is a prime.

It is not a weakly prime, because it can be changed into another prime (20011233343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10005616656 + 10005616657.

It is an arithmetic number, because the mean of its divisors is an integer number (10005616657).

Almost surely, 2^20011233313 is an apocalyptic number.

It is an amenable number.

20011233313 is a deficient number, since it is larger than the sum of its proper divisors (1).

20011233313 is an equidigital number, since it uses as much as digits as its factorization.

20011233313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 20011233313 its reverse (31333211002), we get a palindrome (51344444315).

The spelling of 20011233313 in words is "twenty billion, eleven million, two hundred thirty-three thousand, three hundred thirteen".