6311142 has 32 divisors (see below), whose sum is σ = 14225760. Its totient is φ = 2073600.

The previous prime is 6311117. The next prime is 6311147. The reversal of 6311142 is 2411136.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6311147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3142 + ... + 4742.

It is an arithmetic number, because the mean of its divisors is an integer number (444555).

Almost surely, 2^6311142 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6311142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7112880).

6311142 is an abundant number, since it is smaller than the sum of its proper divisors (7914618).

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

6311142 is a wasteful number, since it uses less digits than its factorization.

6311142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1685 (or 1679 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 6311142 is about 2512.1986386431. The cubic root of 6311142 is about 184.8002909424.

Adding to 6311142 its reverse (2411136), we get a palindrome (8722278).

The spelling of 6311142 in words is "six million, three hundred eleven thousand, one hundred forty-two".