20220311 has 2 divisors, whose sum is σ = 20220312. Its totient is φ = 20220310.

The previous prime is 20220307. The next prime is 20220323. The reversal of 20220311 is 11302202.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20220311 - 2² = 20220307 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20220292 and 20220301.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20220331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10110155 + 10110156.

It is an arithmetic number, because the mean of its divisors is an integer number (10110156).

Almost surely, 2^20220311 is an apocalyptic number.

20220311 is a deficient number, since it is larger than the sum of its proper divisors (1).

20220311 is an equidigital number, since it uses as much as digits as its factorization.

20220311 is an evil number, because the sum of its binary digits is even.

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

The square root of 20220311 is about 4496.7000122312. The cubic root of 20220311 is about 272.4348176166.

Adding to 20220311 its reverse (11302202), we get a palindrome (31522513).

The spelling of 20220311 in words is "twenty million, two hundred twenty thousand, three hundred eleven".