401243113 has 4 divisors (see below), whose sum is σ = 406739668. Its totient is φ = 395746560.

The previous prime is 401243111. The next prime is 401243149. The reversal of 401243113 is 311342104.

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

It can be written as a sum of positive squares in 2 ways, for example, as 101364624 + 299878489 = 10068^2 + 17317^2 .

It is a cyclic number.

It is not a de Polignac number, because 401243113 - 2¹ = 401243111 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (401243111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2748168 + ... + 2748313.

It is an arithmetic number, because the mean of its divisors is an integer number (101684917).

Almost surely, 2^401243113 is an apocalyptic number.

It is an amenable number.

401243113 is a deficient number, since it is larger than the sum of its proper divisors (5496555).

401243113 is an equidigital number, since it uses as much as digits as its factorization.

401243113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5496554.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 401243113 is about 20031.0537166670. The cubic root of 401243113 is about 737.5687882979.

Adding to 401243113 its reverse (311342104), we get a palindrome (712585217).

The spelling of 401243113 in words is "four hundred one million, two hundred forty-three thousand, one hundred thirteen".