424641331 has 2 divisors, whose sum is σ = 424641332. Its totient is φ = 424641330.

The previous prime is 424641319. The next prime is 424641359. The reversal of 424641331 is 133146424.

It is an a-pointer prime, because the next prime (424641359) can be obtained adding 424641331 to its sum of digits (28).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 424641331 - 2⁹ = 424640819 is a prime.

It is a super-2 number, since 2×424641331² = 360640519986903122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 424641331.

It is not a weakly prime, because it can be changed into another prime (424641361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212320665 + 212320666.

It is an arithmetic number, because the mean of its divisors is an integer number (212320666).

Almost surely, 2^424641331 is an apocalyptic number.

424641331 is a deficient number, since it is larger than the sum of its proper divisors (1).

424641331 is an equidigital number, since it uses as much as digits as its factorization.

424641331 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6912, while the sum is 28.

The square root of 424641331 is about 20606.8272909733. The cubic root of 424641331 is about 751.6357371510.

Adding to 424641331 its reverse (133146424), we get a palindrome (557787755).

The spelling of 424641331 in words is "four hundred twenty-four million, six hundred forty-one thousand, three hundred thirty-one".