311032142 has 8 divisors (see below), whose sum is σ = 467387496. Its totient is φ = 155236312.

The previous prime is 311032091. The next prime is 311032159. The reversal of 311032142 is 241230113.

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

It is a self number, because there is not a number n which added to its sum of digits gives 311032142.

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, 138488 + ... + 140715.

It is an arithmetic number, because the mean of its divisors is an integer number (58423437).

Almost surely, 2^311032142 is an apocalyptic number.

311032142 is a deficient number, since it is larger than the sum of its proper divisors (156355354).

311032142 is a wasteful number, since it uses less digits than its factorization.

311032142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279762.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 311032142 is about 17636.1033678078. The cubic root of 311032142 is about 677.5402349893.

Adding to 311032142 its reverse (241230113), we get a palindrome (552262255).

The spelling of 311032142 in words is "three hundred eleven million, thirty-two thousand, one hundred forty-two".