311312542 has 8 divisors (see below), whose sum is σ = 467599536. Its totient is φ = 155446032.

The previous prime is 311312531. The next prime is 311312563. The reversal of 311312542 is 245213113.

It is a happy number.

311312542 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

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, 103263 + ... + 106234.

It is an arithmetic number, because the mean of its divisors is an integer number (58449942).

Almost surely, 2^311312542 is an apocalyptic number.

311312542 is a deficient number, since it is larger than the sum of its proper divisors (156286994).

311312542 is a wasteful number, since it uses less digits than its factorization.

311312542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210242.

The product of its digits is 720, while the sum is 22.

The square root of 311312542 is about 17644.0511787968. The cubic root of 311312542 is about 677.7437779614.

Adding to 311312542 its reverse (245213113), we get a palindrome (556525655).

The spelling of 311312542 in words is "three hundred eleven million, three hundred twelve thousand, five hundred forty-two".