400425311 has 32 divisors (see below), whose sum is σ = 486017280. Its totient is φ = 325036800.

The previous prime is 400425287. The next prime is 400425349. The reversal of 400425311 is 113524004.

It is not a de Polignac number, because 400425311 - 2¹⁸ = 400163167 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400425371) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 955460 + ... + 955878.

It is an arithmetic number, because the mean of its divisors is an integer number (15188040).

Almost surely, 2^400425311 is an apocalyptic number.

400425311 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

400425311 is a deficient number, since it is larger than the sum of its proper divisors (85591969).

400425311 is a wasteful number, since it uses less digits than its factorization.

400425311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 647.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 400425311 is about 20010.6299501040. The cubic root of 400425311 is about 737.0673504136.

Adding to 400425311 its reverse (113524004), we get a palindrome (513949315).

The spelling of 400425311 in words is "four hundred million, four hundred twenty-five thousand, three hundred eleven".