310143242 has 4 divisors (see below), whose sum is σ = 465214866. Its totient is φ = 155071620.

The previous prime is 310143233. The next prime is 310143263. The reversal of 310143242 is 242341013.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 242341013 = 223 ⋅1086731.

It can be written as a sum of positive squares in only one way, i.e., 284630641 + 25512601 = 16871^2 + 5051^2 .

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, 77535809 + ... + 77535812.

Almost surely, 2^310143242 is an apocalyptic number.

310143242 is a deficient number, since it is larger than the sum of its proper divisors (155071624).

310143242 is a wasteful number, since it uses less digits than its factorization.

310143242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155071623.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 310143242 is about 17610.8841913176. The cubic root of 310143242 is about 676.8941708208.

Adding to 310143242 its reverse (242341013), we get a palindrome (552484255).

The spelling of 310143242 in words is "three hundred ten million, one hundred forty-three thousand, two hundred forty-two".