311244442 has 8 divisors (see below), whose sum is σ = 468820800. Its totient is φ = 154970844.

The previous prime is 311244431. The next prime is 311244463. The reversal of 311244442 is 244442113.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 325092 + ... + 326047.

It is an arithmetic number, because the mean of its divisors is an integer number (58602600).

Almost surely, 2^311244442 is an apocalyptic number.

311244442 is a deficient number, since it is larger than the sum of its proper divisors (157576358).

311244442 is a wasteful number, since it uses less digits than its factorization.

311244442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 651380.

The product of its digits is 3072, while the sum is 25.

The square root of 311244442 is about 17642.1212443402. The cubic root of 311244442 is about 677.6943552635.

Adding to 311244442 its reverse (244442113), we get a palindrome (555686555).

The spelling of 311244442 in words is "three hundred eleven million, two hundred forty-four thousand, four hundred forty-two".