402303523 has 16 divisors (see below), whose sum is σ = 421867264. Its totient is φ = 383201280.

The previous prime is 402303509. The next prime is 402303527. The reversal of 402303523 is 325303204.

It is a cyclic number.

It is not a de Polignac number, because 402303523 - 2¹³ = 402295331 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 402303494 and 402303503.

It is not an unprimeable number, because it can be changed into a prime (402303527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1013161 + ... + 1013557.

It is an arithmetic number, because the mean of its divisors is an integer number (26366704).

Almost surely, 2^402303523 is an apocalyptic number.

402303523 is a deficient number, since it is larger than the sum of its proper divisors (19563741).

402303523 is a wasteful number, since it uses less digits than its factorization.

402303523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 862.

The product of its (nonzero) digits is 2160, while the sum is 22.

The square root of 402303523 is about 20057.5054032150. The cubic root of 402303523 is about 738.2179685580.

Adding to 402303523 its reverse (325303204), we get a palindrome (727606727).

The spelling of 402303523 in words is "four hundred two million, three hundred three thousand, five hundred twenty-three".