20010323213 has 2 divisors, whose sum is σ = 20010323214. Its totient is φ = 20010323212.

The previous prime is 20010323209. The next prime is 20010323227. The reversal of 20010323213 is 31232301002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15041060164 + 4969263049 = 122642^2 + 70493^2 .

It is a cyclic number.

It is not a de Polignac number, because 20010323213 - 2² = 20010323209 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20010323191 and 20010323200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20010323243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10005161606 + 10005161607.

It is an arithmetic number, because the mean of its divisors is an integer number (10005161607).

Almost surely, 2^20010323213 is an apocalyptic number.

It is an amenable number.

20010323213 is a deficient number, since it is larger than the sum of its proper divisors (1).

20010323213 is an equidigital number, since it uses as much as digits as its factorization.

20010323213 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 20010323213 its reverse (31232301002), we get a palindrome (51242624215).

The spelling of 20010323213 in words is "twenty billion, ten million, three hundred twenty-three thousand, two hundred thirteen".