311024142 has 48 divisors (see below), whose sum is σ = 791704368. Its totient is φ = 86999040.

The previous prime is 311024123. The next prime is 311024173. The reversal of 311024142 is 241420113.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

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 in 23 ways as a sum of consecutive naturals, for example, 57843 + ... + 62990.

It is an arithmetic number, because the mean of its divisors is an integer number (16493841).

Almost surely, 2^311024142 is an apocalyptic number.

311024142 is an abundant number, since it is smaller than the sum of its proper divisors (480680226).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

311024142 is a wasteful number, since it uses less digits than its factorization.

311024142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120865 (or 120862 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 311024142 is about 17635.8765588785. The cubic root of 311024142 is about 677.5344259772.

Adding to 311024142 its reverse (241420113), we get a palindrome (552444255).

The spelling of 311024142 in words is "three hundred eleven million, twenty-four thousand, one hundred forty-two".