20323000402213 has 4 divisors (see below), whose sum is σ = 20337182539308. Its totient is φ = 20308818265120.

The previous prime is 20323000402171. The next prime is 20323000402241. The reversal of 20323000402213 is 31220400032302.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 19256237805249 + 1066762596964 = 4388193^2 + 1032842^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20323000402213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20323000402253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7091066398 + ... + 7091069263.

It is an arithmetic number, because the mean of its divisors is an integer number (5084295634827).

Almost surely, 2^{20323000402213} is an apocalyptic number.

It is an amenable number.

20323000402213 is a deficient number, since it is larger than the sum of its proper divisors (14182137095).

20323000402213 is a wasteful number, since it uses less digits than its factorization.

20323000402213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14182137094.

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 20323000402213 its reverse (31220400032302), we get a palindrome (51543400434515).

The spelling of 20323000402213 in words is "twenty trillion, three hundred twenty-three billion, four hundred two thousand, two hundred thirteen".