401031440 has 40 divisors (see below), whose sum is σ = 933684288. Its totient is φ = 160191360.

The previous prime is 401031391. The next prime is 401031457. The reversal of 401031440 is 44130104.

401031440 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62795 + ... + 68885.

Almost surely, 2^401031440 is an apocalyptic number.

401031440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

401031440 is an abundant number, since it is smaller than the sum of its proper divisors (532652848).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

401031440 is a wasteful number, since it uses less digits than its factorization.

401031440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6927 (or 6921 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 401031440 is about 20025.7693984526. The cubic root of 401031440 is about 737.4390657307.

Adding to 401031440 its reverse (44130104), we get a palindrome (445161544).

The spelling of 401031440 in words is "four hundred one million, thirty-one thousand, four hundred forty".