310220242 has 4 divisors (see below), whose sum is σ = 465330366. Its totient is φ = 155110120.

The previous prime is 310220237. The next prime is 310220263. The reversal of 310220242 is 242022013.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 286997481 + 23222761 = 16941^2 + 4819^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77555059 + ... + 77555062.

Almost surely, 2^310220242 is an apocalyptic number.

310220242 is a deficient number, since it is larger than the sum of its proper divisors (155110124).

310220242 is a wasteful number, since it uses less digits than its factorization.

310220242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155110123.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 310220242 is about 17613.0702036868. The cubic root of 310220242 is about 676.9501842272.

Adding to 310220242 its reverse (242022013), we get a palindrome (552242255).

The spelling of 310220242 in words is "three hundred ten million, two hundred twenty thousand, two hundred forty-two".