142306311 has 8 divisors (see below), whose sum is σ = 216847744. Its totient is φ = 81317880.

The previous prime is 142306301. The next prime is 142306319. The reversal of 142306311 is 113603241.

142306311 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 142306311 - 2⁵ = 142306279 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 6776491 = 142306311 / (1 + 4 + 2 + 3 + 0 + 6 + 3 + 1 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142306319) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3388225 + ... + 3388266.

It is an arithmetic number, because the mean of its divisors is an integer number (27105968).

Almost surely, 2^142306311 is an apocalyptic number.

142306311 is a deficient number, since it is larger than the sum of its proper divisors (74541433).

142306311 is an equidigital number, since it uses as much as digits as its factorization.

142306311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6776501.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 142306311 is about 11929.2208882223. The cubic root of 142306311 is about 522.0852057738.

Adding to 142306311 its reverse (113603241), we get a palindrome (255909552).

The spelling of 142306311 in words is "one hundred forty-two million, three hundred six thousand, three hundred eleven".