20313332111 has 4 divisors (see below), whose sum is σ = 20332884000. Its totient is φ = 20293780224.

The previous prime is 20313332093. The next prime is 20313332129. The reversal of 20313332111 is 11123331302.

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

It is an interprime number because it is at equal distance from previous prime (20313332093) and next prime (20313332129).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20313332111 is a prime.

It is a super-2 number, since 2×20313332111² (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 (20313332191) 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, 9774386 + ... + 9776463.

It is an arithmetic number, because the mean of its divisors is an integer number (5083221000).

Almost surely, 2^20313332111 is an apocalyptic number.

20313332111 is a deficient number, since it is larger than the sum of its proper divisors (19551889).

20313332111 is a wasteful number, since it uses less digits than its factorization.

20313332111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19551888.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 20313332111 its reverse (11123331302), we get a palindrome (31436663413).

The spelling of 20313332111 in words is "twenty billion, three hundred thirteen million, three hundred thirty-two thousand, one hundred eleven".