424020220031 has 2 divisors, whose sum is σ = 424020220032. Its totient is φ = 424020220030.

The previous prime is 424020219983. The next prime is 424020220051. The reversal of 424020220031 is 130022020424.

It is an a-pointer prime, because the next prime (424020220051) can be obtained adding 424020220031 to its sum of digits (20).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 424020220031 - 2¹⁸ = 424019957887 is a prime.

It is a super-2 number, since 2×424020220031² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 424020219985 and 424020220012.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (424020220051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212010110015 + 212010110016.

It is an arithmetic number, because the mean of its divisors is an integer number (212010110016).

Almost surely, 2^424020220031 is an apocalyptic number.

424020220031 is a deficient number, since it is larger than the sum of its proper divisors (1).

424020220031 is an equidigital number, since it uses as much as digits as its factorization.

424020220031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 424020220031 its reverse (130022020424), we get a palindrome (554042240455).

The spelling of 424020220031 in words is "four hundred twenty-four billion, twenty million, two hundred twenty thousand, thirty-one".