303131042 has 4 divisors (see below), whose sum is σ = 454696566. Its totient is φ = 151565520.

The previous prime is 303131039. The next prime is 303131057. The reversal of 303131042 is 240131303.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 240131303 = 13331 ⋅18013.

It can be written as a sum of positive squares in only one way, i.e., 189090001 + 114041041 = 13751^2 + 10679^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 303131042.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75782759 + ... + 75782762.

Almost surely, 2^303131042 is an apocalyptic number.

303131042 is a deficient number, since it is larger than the sum of its proper divisors (151565524).

303131042 is a wasteful number, since it uses less digits than its factorization.

303131042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151565523.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 303131042 is about 17410.6588617433. The cubic root of 303131042 is about 671.7538086859.

Adding to 303131042 its reverse (240131303), we get a palindrome (543262345).

The spelling of 303131042 in words is "three hundred three million, one hundred thirty-one thousand, forty-two".