403216001 has 4 divisors (see below), whose sum is σ = 403279872. Its totient is φ = 403152132.

The previous prime is 403215991. The next prime is 403216019. The reversal of 403216001 is 100612304.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 403216001 - 2²² = 399021697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (403216601) 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, 21281 + ... + 35486.

It is an arithmetic number, because the mean of its divisors is an integer number (100819968).

Almost surely, 2^403216001 is an apocalyptic number.

It is an amenable number.

403216001 is a deficient number, since it is larger than the sum of its proper divisors (63871).

403216001 is an equidigital number, since it uses as much as digits as its factorization.

403216001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63870.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 403216001 is about 20080.2390673020. The cubic root of 403216001 is about 738.7756726963.

Adding to 403216001 its reverse (100612304), we get a palindrome (503828305).

The spelling of 403216001 in words is "four hundred three million, two hundred sixteen thousand, one".