142231311 has 12 divisors (see below), whose sum is σ = 205765560. Its totient is φ = 94673040.

The previous prime is 142231307. The next prime is 142231339. The reversal of 142231311 is 113132241.

142231311 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 142231311 - 2² = 142231307 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142231301) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6060 + ... + 17921.

It is an arithmetic number, because the mean of its divisors is an integer number (17147130).

Almost surely, 2^142231311 is an apocalyptic number.

142231311 is a deficient number, since it is larger than the sum of its proper divisors (63534249).

142231311 is a wasteful number, since it uses less digits than its factorization.

142231311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24646 (or 24643 counting only the distinct ones).

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

The square root of 142231311 is about 11926.0769325038. The cubic root of 142231311 is about 521.9934710946.

Adding to 142231311 its reverse (113132241), we get a palindrome (255363552).

The spelling of 142231311 in words is "one hundred forty-two million, two hundred thirty-one thousand, three hundred eleven".