400601311 has 8 divisors (see below), whose sum is σ = 462726864. Its totient is φ = 342760320.

The previous prime is 400601309. The next prime is 400601317. The reversal of 400601311 is 113106004.

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

It is a cyclic number.

It is not a de Polignac number, because 400601311 - 2¹ = 400601309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400601317) 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 7 ways as a sum of consecutive naturals, for example, 1070940 + ... + 1071313.

It is an arithmetic number, because the mean of its divisors is an integer number (57840858).

Almost surely, 2^400601311 is an apocalyptic number.

400601311 is a deficient number, since it is larger than the sum of its proper divisors (62125553).

400601311 is a wasteful number, since it uses less digits than its factorization.

400601311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2142281.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 400601311 is about 20015.0271296344. The cubic root of 400601311 is about 737.1753229858.

Adding to 400601311 its reverse (113106004), we get a palindrome (513707315).

The spelling of 400601311 in words is "four hundred million, six hundred one thousand, three hundred eleven".