311404042 has 8 divisors (see below), whose sum is σ = 467554500. Its totient is φ = 155552544.

The previous prime is 311404039. The next prime is 311404043. The reversal of 311404042 is 240404113.

It can be written as a sum of positive squares in 2 ways, for example, as 310499641 + 904401 = 17621^2 + 951^2 .

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

It is not an unprimeable number, because it can be changed into a prime (311404043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72117 + ... + 76312.

Almost surely, 2^311404042 is an apocalyptic number.

311404042 is a deficient number, since it is larger than the sum of its proper divisors (156150458).

311404042 is a wasteful number, since it uses less digits than its factorization.

311404042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149480.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 311404042 is about 17646.6439302208. The cubic root of 311404042 is about 677.8101715613.

Adding to 311404042 its reverse (240404113), we get a palindrome (551808155).

The spelling of 311404042 in words is "three hundred eleven million, four hundred four thousand, forty-two".