403003021323 has 32 divisors (see below), whose sum is σ = 625844330496. Its totient is φ = 225885449088.

The previous prime is 403003021321. The next prime is 403003021381. The reversal of 403003021323 is 323120300304.

It is not a de Polignac number, because 403003021323 - 2¹ = 403003021321 is a prime.

It is a super-2 number, since 2×403003021323² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 403003021323.

It is not an unprimeable number, because it can be changed into a prime (403003021321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4583190 + ... + 4670292.

It is an arithmetic number, because the mean of its divisors is an integer number (19557635328).

Almost surely, 2^403003021323 is an apocalyptic number.

403003021323 is a deficient number, since it is larger than the sum of its proper divisors (222841309173).

403003021323 is a wasteful number, since it uses less digits than its factorization.

403003021323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91323.

The product of its (nonzero) digits is 1296, while the sum is 21.

Adding to 403003021323 its reverse (323120300304), we get a palindrome (726123321627).

The spelling of 403003021323 in words is "four hundred three billion, three million, twenty-one thousand, three hundred twenty-three".