400316311 has 4 divisors (see below), whose sum is σ = 417721392. Its totient is φ = 382911232.

The previous prime is 400316309. The next prime is 400316317. The reversal of 400316311 is 113613004.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 400316311 - 2¹ = 400316309 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 (400316317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8702506 + ... + 8702551.

It is an arithmetic number, because the mean of its divisors is an integer number (104430348).

Almost surely, 2^400316311 is an apocalyptic number.

400316311 is a deficient number, since it is larger than the sum of its proper divisors (17405081).

400316311 is a wasteful number, since it uses less digits than its factorization.

400316311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17405080.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 400316311 is about 20007.9062122952. The cubic root of 400316311 is about 737.0004651711. Note that the first 3 decimals are identical.

Adding to 400316311 its reverse (113613004), we get a palindrome (513929315).

The spelling of 400316311 in words is "four hundred million, three hundred sixteen thousand, three hundred eleven".