20022311 has 8 divisors (see below), whose sum is σ = 21884544. Its totient is φ = 18236160.

The previous prime is 20022283. The next prime is 20022323. The reversal of 20022311 is 11322002.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20022311 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20022292 and 20022301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20022011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18470 + ... + 19523.

It is an arithmetic number, because the mean of its divisors is an integer number (2735568).

Almost surely, 2^20022311 is an apocalyptic number.

20022311 is a deficient number, since it is larger than the sum of its proper divisors (1862233).

20022311 is a wasteful number, since it uses less digits than its factorization.

20022311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38041.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 20022311 is about 4474.6297053499. The cubic root of 20022311 is about 271.5426597689.

Adding to 20022311 its reverse (11322002), we get a palindrome (31344313).

The spelling of 20022311 in words is "twenty million, twenty-two thousand, three hundred eleven".