313808042 has 4 divisors (see below), whose sum is σ = 470712066. Its totient is φ = 156904020.

The previous prime is 313808029. The next prime is 313808059. The reversal of 313808042 is 240808313.

It is a happy number.

313808042 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 240808313 = 617 ⋅390289.

It can be written as a sum of positive squares in only one way, i.e., 312617761 + 1190281 = 17681^2 + 1091^2 .

It is a junction number, because it is equal to n+sod(n) for n = 313807996 and 313808014.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 78452009 + ... + 78452012.

Almost surely, 2^313808042 is an apocalyptic number.

313808042 is a deficient number, since it is larger than the sum of its proper divisors (156904024).

313808042 is a wasteful number, since it uses less digits than its factorization.

313808042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156904023.

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

The square root of 313808042 is about 17714.6279102893. The cubic root of 313808042 is about 679.5499054336.

The spelling of 313808042 in words is "three hundred thirteen million, eight hundred eight thousand, forty-two".