311428406 has 8 divisors (see below), whose sum is σ = 494621640. Its totient is φ = 146554528.

The previous prime is 311428391. The next prime is 311428409. The reversal of 311428406 is 604824113.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311428409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4579796 + ... + 4579863.

It is an arithmetic number, because the mean of its divisors is an integer number (61827705).

Almost surely, 2^311428406 is an apocalyptic number.

311428406 is a deficient number, since it is larger than the sum of its proper divisors (183193234).

311428406 is a wasteful number, since it uses less digits than its factorization.

311428406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9159678.

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 311428406 is about 17647.3342462821. The cubic root of 311428406 is about 677.8278482066.

The spelling of 311428406 in words is "three hundred eleven million, four hundred twenty-eight thousand, four hundred six".