424421320331 has 4 divisors (see below), whose sum is σ = 424428486552. Its totient is φ = 424414154112.

The previous prime is 424421320291. The next prime is 424421320339. The reversal of 424421320331 is 133023124424.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 424421320331 - 2²² = 424417126027 is a prime.

It is a super-2 number, since 2×424421320331² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 424421320294 and 424421320303.

It is not an unprimeable number, because it can be changed into a prime (424421320339) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3493526 + ... + 3612971.

It is an arithmetic number, because the mean of its divisors is an integer number (106107121638).

Almost surely, 2^424421320331 is an apocalyptic number.

424421320331 is a deficient number, since it is larger than the sum of its proper divisors (7166221).

424421320331 is an equidigital number, since it uses as much as digits as its factorization.

424421320331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7166220.

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 424421320331 its reverse (133023124424), we get a palindrome (557444444755).

The spelling of 424421320331 in words is "four hundred twenty-four billion, four hundred twenty-one million, three hundred twenty thousand, three hundred thirty-one".