311011142 has 8 divisors (see below), whose sum is σ = 502402656. Its totient is φ = 143543592.

The previous prime is 311011121. The next prime is 311011147. The reversal of 311011142 is 241110113.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311011147) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 5980958 + ... + 5981009.

It is an arithmetic number, because the mean of its divisors is an integer number (62800332).

Almost surely, 2^311011142 is an apocalyptic number.

311011142 is a deficient number, since it is larger than the sum of its proper divisors (191391514).

311011142 is a wasteful number, since it uses less digits than its factorization.

311011142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11961982.

The product of its (nonzero) digits is 24, while the sum is 14.

The square root of 311011142 is about 17635.5079881471. The cubic root of 311011142 is about 677.5249861203.

Adding to 311011142 its reverse (241110113), we get a palindrome (552121255).

The spelling of 311011142 in words is "three hundred eleven million, eleven thousand, one hundred forty-two".