311305042 has 8 divisors (see below), whose sum is σ = 467567100. Its totient is φ = 155449344.

The previous prime is 311305039. The next prime is 311305097. The reversal of 311305042 is 240503113.

It can be written as a sum of positive squares in 2 ways, for example, as 306635121 + 4669921 = 17511^2 + 2161^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99667 + ... + 102742.

Almost surely, 2^311305042 is an apocalyptic number.

311305042 is a deficient number, since it is larger than the sum of its proper divisors (156262058).

311305042 is a wasteful number, since it uses less digits than its factorization.

311305042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203180.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 311305042 is about 17643.8386412935. The cubic root of 311305042 is about 677.7383352862.

Adding to 311305042 its reverse (240503113), we get a palindrome (551808155).

The spelling of 311305042 in words is "three hundred eleven million, three hundred five thousand, forty-two".