20313423311 has 4 divisors (see below), whose sum is σ = 20314213824. Its totient is φ = 20312632800.

The previous prime is 20313423287. The next prime is 20313423343. The reversal of 20313423311 is 11332431302.

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

It is a cyclic number.

It is not a de Polignac number, because 20313423311 - 2²⁶ = 20246314447 is a prime.

It is a super-2 number, since 2×20313423311² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20313423371) 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, 355370 + ... + 408551.

It is an arithmetic number, because the mean of its divisors is an integer number (5078553456).

Almost surely, 2^20313423311 is an apocalyptic number.

20313423311 is a deficient number, since it is larger than the sum of its proper divisors (790513).

20313423311 is an equidigital number, since it uses as much as digits as its factorization.

20313423311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 790512.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 20313423311 its reverse (11332431302), we get a palindrome (31645854613).

The spelling of 20313423311 in words is "twenty billion, three hundred thirteen million, four hundred twenty-three thousand, three hundred eleven".