403225631 has 4 divisors (see below), whose sum is σ = 409243992. Its totient is φ = 397207272.

The previous prime is 403225597. The next prime is 403225637. The reversal of 403225631 is 136522304.

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 403225631 - 2¹⁸ = 402963487 is a prime.

It is a super-2 number, since 2×403225631² = 325181818990696322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 403225631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (403225637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3009080 + ... + 3009213.

It is an arithmetic number, because the mean of its divisors is an integer number (102310998).

Almost surely, 2^403225631 is an apocalyptic number.

403225631 is a deficient number, since it is larger than the sum of its proper divisors (6018361).

403225631 is an equidigital number, since it uses as much as digits as its factorization.

403225631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6018360.

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 403225631 is about 20080.4788538521. The cubic root of 403225631 is about 738.7815540379.

Adding to 403225631 its reverse (136522304), we get a palindrome (539747935).

The spelling of 403225631 in words is "four hundred three million, two hundred twenty-five thousand, six hundred thirty-one".