20224031 has 2 divisors, whose sum is σ = 20224032. Its totient is φ = 20224030.

The previous prime is 20224013. The next prime is 20224069. The reversal of 20224031 is 13042202.

Together with previous prime (20224013) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20224031 is a prime.

It is a super-2 number, since 2×20224031² = 818022859777922, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 20223997 and 20224015.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20224081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10112015 + 10112016.

It is an arithmetic number, because the mean of its divisors is an integer number (10112016).

Almost surely, 2^20224031 is an apocalyptic number.

20224031 is a deficient number, since it is larger than the sum of its proper divisors (1).

20224031 is an equidigital number, since it uses as much as digits as its factorization.

20224031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 20224031 is about 4497.1136298742. The cubic root of 20224031 is about 272.4515235149.

Adding to 20224031 its reverse (13042202), we get a palindrome (33266233).

The spelling of 20224031 in words is "twenty million, two hundred twenty-four thousand, thirty-one".