402523323 has 16 divisors (see below), whose sum is σ = 547051296. Its totient is φ = 263197440.

The previous prime is 402523283. The next prime is 402523327. The reversal of 402523323 is 323325204.

It is not a de Polignac number, because 402523323 - 2⁸ = 402523067 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 402523293 and 402523302.

It is not an unprimeable number, because it can be changed into a prime (402523327) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65311 + ... + 71207.

It is an arithmetic number, because the mean of its divisors is an integer number (34190706).

Almost surely, 2^402523323 is an apocalyptic number.

402523323 is a deficient number, since it is larger than the sum of its proper divisors (144527973).

402523323 is a wasteful number, since it uses less digits than its factorization.

402523323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6334.

The product of its (nonzero) digits is 4320, while the sum is 24.

The square root of 402523323 is about 20062.9839007063. The cubic root of 402523323 is about 738.3523867760.

Adding to 402523323 its reverse (323325204), we get a palindrome (725848527).

The spelling of 402523323 in words is "four hundred two million, five hundred twenty-three thousand, three hundred twenty-three".