420031333231 has 2 divisors, whose sum is σ = 420031333232. Its totient is φ = 420031333230.

The previous prime is 420031333213. The next prime is 420031333243. The reversal of 420031333231 is 132333130024.

Together with previous prime (420031333213) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 420031333231 - 2⁹ = 420031332719 is a prime.

It is a super-2 number, since 2×420031333231² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 420031333196 and 420031333205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420031333531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210015666615 + 210015666616.

It is an arithmetic number, because the mean of its divisors is an integer number (210015666616).

Almost surely, 2^420031333231 is an apocalyptic number.

420031333231 is a deficient number, since it is larger than the sum of its proper divisors (1).

420031333231 is an equidigital number, since it uses as much as digits as its factorization.

420031333231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 25.

Adding to 420031333231 its reverse (132333130024), we get a palindrome (552364463255).

The spelling of 420031333231 in words is "four hundred twenty billion, thirty-one million, three hundred thirty-three thousand, two hundred thirty-one".