420123331 has 2 divisors, whose sum is σ = 420123332. Its totient is φ = 420123330.

The previous prime is 420123233. The next prime is 420123367. The reversal of 420123331 is 133321024.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 420123331 - 2¹¹ = 420121283 is a prime.

It is a super-2 number, since 2×420123331² = 353007226501071122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 420123299 and 420123308.

It is not a weakly prime, because it can be changed into another prime (420123391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210061665 + 210061666.

It is an arithmetic number, because the mean of its divisors is an integer number (210061666).

Almost surely, 2^420123331 is an apocalyptic number.

420123331 is a deficient number, since it is larger than the sum of its proper divisors (1).

420123331 is an equidigital number, since it uses as much as digits as its factorization.

420123331 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 420123331 is about 20496.9102793567. The cubic root of 420123331 is about 748.9605339386.

Adding to 420123331 its reverse (133321024), we get a palindrome (553444355).

The spelling of 420123331 in words is "four hundred twenty million, one hundred twenty-three thousand, three hundred thirty-one".