403312122 has 40 divisors (see below), whose sum is σ = 910880256. Its totient is φ = 133372008.

The previous prime is 403312111. The next prime is 403312159. The reversal of 403312122 is 221213304.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 403312095 and 403312104.

It is an unprimeable number.

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 19 ways as a sum of consecutive naturals, for example, 10773 + ... + 30375.

Almost surely, 2^403312122 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 403312122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (455440128).

403312122 is an abundant number, since it is smaller than the sum of its proper divisors (507568134).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

403312122 is a wasteful number, since it uses less digits than its factorization.

403312122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19744 (or 19735 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 403312122 is about 20082.6323473792. The cubic root of 403312122 is about 738.8343725944.

Adding to 403312122 its reverse (221213304), we get a palindrome (624525426).

The spelling of 403312122 in words is "four hundred three million, three hundred twelve thousand, one hundred twenty-two".