313191442 has 8 divisors (see below), whose sum is σ = 497421756. Its totient is φ = 147384192.

The previous prime is 313191427. The next prime is 313191449. The reversal of 313191442 is 244191313.

It can be written as a sum of positive squares in 2 ways, for example, as 312971481 + 219961 = 17691^2 + 469^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 313191442.

It is not an unprimeable number, because it can be changed into a prime (313191449) 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, 4605723 + ... + 4605790.

Almost surely, 2^313191442 is an apocalyptic number.

313191442 is a deficient number, since it is larger than the sum of its proper divisors (184230314).

313191442 is a wasteful number, since it uses less digits than its factorization.

313191442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9211532.

The product of its digits is 2592, while the sum is 28.

The square root of 313191442 is about 17697.2156567071. The cubic root of 313191442 is about 679.1045320920.

It can be divided in two parts, 31319 and 1442, that added together give a square (32761 = 181²).

The spelling of 313191442 in words is "three hundred thirteen million, one hundred ninety-one thousand, four hundred forty-two".