422031331 has 2 divisors, whose sum is σ = 422031332. Its totient is φ = 422031330.

The previous prime is 422031317. The next prime is 422031353. The reversal of 422031331 is 133130224.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 422031331 - 2⁵ = 422031299 is a prime.

It is a super-2 number, since 2×422031331² = 356220888691263122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 422031299 and 422031308.

It is not a weakly prime, because it can be changed into another prime (422034331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211015665 + 211015666.

It is an arithmetic number, because the mean of its divisors is an integer number (211015666).

Almost surely, 2^422031331 is an apocalyptic number.

422031331 is a deficient number, since it is larger than the sum of its proper divisors (1).

422031331 is an equidigital number, since it uses as much as digits as its factorization.

422031331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 422031331 is about 20543.4011546287. The cubic root of 422031331 is about 750.0926291519.

Adding to 422031331 its reverse (133130224), we get a palindrome (555161555).

It can be divided in two parts, 42203 and 1331, that added together give a palindrome (43534).

The spelling of 422031331 in words is "four hundred twenty-two million, thirty-one thousand, three hundred thirty-one".