20323513213 has 4 divisors (see below), whose sum is σ = 20370667968. Its totient is φ = 20276358460.

The previous prime is 20323513183. The next prime is 20323513271. The reversal of 20323513213 is 31231532302.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20323513213 - 2⁵ = 20323513181 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 (20323513013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23576731 + ... + 23577592.

It is an arithmetic number, because the mean of its divisors is an integer number (5092666992).

Almost surely, 2^20323513213 is an apocalyptic number.

It is an amenable number.

20323513213 is a deficient number, since it is larger than the sum of its proper divisors (47154755).

20323513213 is an equidigital number, since it uses as much as digits as its factorization.

20323513213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47154754.

The product of its (nonzero) digits is 3240, while the sum is 25.

The spelling of 20323513213 in words is "twenty billion, three hundred twenty-three million, five hundred thirteen thousand, two hundred thirteen".