401133523 has 4 divisors (see below), whose sum is σ = 458438320. Its totient is φ = 343828728.

The previous prime is 401133511. The next prime is 401133553. The reversal of 401133523 is 325331104.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-401133523 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 401133494 and 401133503.

It is not an unprimeable number, because it can be changed into a prime (401133553) 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 3 ways as a sum of consecutive naturals, for example, 28652388 + ... + 28652401.

It is an arithmetic number, because the mean of its divisors is an integer number (114609580).

Almost surely, 2^401133523 is an apocalyptic number.

401133523 is a deficient number, since it is larger than the sum of its proper divisors (57304797).

401133523 is an equidigital number, since it uses as much as digits as its factorization.

401133523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57304796.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 401133523 is about 20028.3180272333. The cubic root of 401133523 is about 737.5016324009.

Adding to 401133523 its reverse (325331104), we get a palindrome (726464627).

The spelling of 401133523 in words is "four hundred one million, one hundred thirty-three thousand, five hundred twenty-three".