421433313 has 16 divisors (see below), whose sum is σ = 662900736. Its totient is φ = 233050320.

The previous prime is 421433297. The next prime is 421433333. The reversal of 421433313 is 313334124.

It is not a de Polignac number, because 421433313 - 2⁴ = 421433297 is a prime.

It is not an unprimeable number, because it can be changed into a prime (421433333) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 323031 + ... + 324332.

It is an arithmetic number, because the mean of its divisors is an integer number (41431296).

Almost surely, 2^421433313 is an apocalyptic number.

It is an amenable number.

421433313 is a deficient number, since it is larger than the sum of its proper divisors (241467423).

421433313 is a wasteful number, since it uses less digits than its factorization.

421433313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 647404.

The product of its digits is 2592, while the sum is 24.

The square root of 421433313 is about 20528.8410047913. The cubic root of 421433313 is about 749.7381681583.

Adding to 421433313 its reverse (313334124), we get a palindrome (734767437).

The spelling of 421433313 in words is "four hundred twenty-one million, four hundred thirty-three thousand, three hundred thirteen".