403221013 has 8 divisors (see below), whose sum is σ = 437554656. Its totient is φ = 369361200.

The previous prime is 403220911. The next prime is 403221029. The reversal of 403221013 is 310122304.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-403221013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (403221083) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116683 + ... + 120088.

It is an arithmetic number, because the mean of its divisors is an integer number (54694332).

Almost surely, 2^403221013 is an apocalyptic number.

It is an amenable number.

403221013 is a deficient number, since it is larger than the sum of its proper divisors (34333643).

403221013 is a wasteful number, since it uses less digits than its factorization.

403221013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236915.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 403221013 is about 20080.3638662251. The cubic root of 403221013 is about 738.7787336929.

Adding to 403221013 its reverse (310122304), we get a palindrome (713343317).

The spelling of 403221013 in words is "four hundred three million, two hundred twenty-one thousand, thirteen".