401131544 has 32 divisors (see below), whose sum is σ = 829731600. Its totient is φ = 180280320.

The previous prime is 401131517. The next prime is 401131559. The reversal of 401131544 is 445131104.

It is a congruent number.

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, 17777 + ... + 33440.

Almost surely, 2^401131544 is an apocalyptic number.

401131544 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

401131544 is an abundant number, since it is smaller than the sum of its proper divisors (428600056).

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

401131544 is a wasteful number, since it uses less digits than its factorization.

401131544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51323 (or 51319 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 401131544 is about 20028.2686221251. The cubic root of 401131544 is about 737.5004195727.

Adding to 401131544 its reverse (445131104), we get a palindrome (846262648).

The spelling of 401131544 in words is "four hundred one million, one hundred thirty-one thousand, five hundred forty-four".