401005131 has 8 divisors (see below), whose sum is σ = 538520640. Its totient is φ = 265413192.

The previous prime is 401005037. The next prime is 401005139. The reversal of 401005131 is 131500104.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-401005131 is a prime.

It is a super-2 number, since 2×401005131² = 321610230176654322, 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 401005131.

It is not an unprimeable number, because it can be changed into a prime (401005139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 480405 + ... + 481238.

It is an arithmetic number, because the mean of its divisors is an integer number (67315080).

Almost surely, 2^401005131 is an apocalyptic number.

401005131 is a deficient number, since it is larger than the sum of its proper divisors (137515509).

401005131 is a wasteful number, since it uses less digits than its factorization.

401005131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 961785.

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 401005131 is about 20025.1125090472. The cubic root of 401005131 is about 737.4229392239.

Adding to 401005131 its reverse (131500104), we get a palindrome (532505235).

The spelling of 401005131 in words is "four hundred one million, five thousand, one hundred thirty-one".