20001223313 has 2 divisors, whose sum is σ = 20001223314. Its totient is φ = 20001223312.

The previous prime is 20001223309. The next prime is 20001223349. The reversal of 20001223313 is 31332210002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17299614784 + 2701608529 = 131528^2 + 51977^2 .

It is a cyclic number.

It is not a de Polignac number, because 20001223313 - 2² = 20001223309 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20001223291 and 20001223300.

It is not a weakly prime, because it can be changed into another prime (20001223813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10000611656 + 10000611657.

It is an arithmetic number, because the mean of its divisors is an integer number (10000611657).

Almost surely, 2^20001223313 is an apocalyptic number.

It is an amenable number.

20001223313 is a deficient number, since it is larger than the sum of its proper divisors (1).

20001223313 is an equidigital number, since it uses as much as digits as its factorization.

20001223313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 20001223313 its reverse (31332210002), we get a palindrome (51333433315).

The spelling of 20001223313 in words is "twenty billion, one million, two hundred twenty-three thousand, three hundred thirteen".