401431305 has 64 divisors (see below), whose sum is σ = 737372160. Its totient is φ = 184588800.

The previous prime is 401431271. The next prime is 401431313. The reversal of 401431305 is 503134104.

It is not a de Polignac number, because 401431305 - 2⁹ = 401430793 is a prime.

It is a super-2 number, since 2×401431305² = 322294185268006050, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 527125 + ... + 527885.

It is an arithmetic number, because the mean of its divisors is an integer number (11521440).

Almost surely, 2^401431305 is an apocalyptic number.

It is an amenable number.

401431305 is a deficient number, since it is larger than the sum of its proper divisors (335940855).

401431305 is a wasteful number, since it uses less digits than its factorization.

401431305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 942.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 401431305 is about 20035.7506722359. The cubic root of 401431305 is about 737.6840823642.

Adding to 401431305 its reverse (503134104), we get a palindrome (904565409).

The spelling of 401431305 in words is "four hundred one million, four hundred thirty-one thousand, three hundred five".