401312523 has 16 divisors (see below), whose sum is σ = 569963520. Its totient is φ = 250290816.

The previous prime is 401312521. The next prime is 401312531. The reversal of 401312523 is 325213104.

It is not a de Polignac number, because 401312523 - 2¹ = 401312521 is a prime.

It is a super-2 number, since 2×401312523² = 322103482233251058, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 401312523.

It is not an unprimeable number, because it can be changed into a prime (401312521) 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, 15043 + ... + 32076.

It is an arithmetic number, because the mean of its divisors is an integer number (35622720).

Almost surely, 2^401312523 is an apocalyptic number.

401312523 is a deficient number, since it is larger than the sum of its proper divisors (168650997).

401312523 is a wasteful number, since it uses less digits than its factorization.

401312523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47306.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 401312523 is about 20032.7862016246. The cubic root of 401312523 is about 737.6113158797.

Adding to 401312523 its reverse (325213104), we get a palindrome (726525627).

The spelling of 401312523 in words is "four hundred one million, three hundred twelve thousand, five hundred twenty-three".