142331 has 4 divisors (see below), whose sum is σ = 162672. Its totient is φ = 121992.

The previous prime is 142327. The next prime is 142357. The reversal of 142331 is 133241.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 142331 - 2² = 142327 is a prime.

It is a super-2 number, since 2×142331² = 40516227122, which contains 22 as substring.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 142331.

It is not an unprimeable number, because it can be changed into a prime (142381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10160 + ... + 10173.

It is an arithmetic number, because the mean of its divisors is an integer number (40668).

2¹⁴²³³¹ is an apocalyptic number.

142331 is a deficient number, since it is larger than the sum of its proper divisors (20341).

142331 is an equidigital number, since it uses as much as digits as its factorization.

142331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20340.

The product of its digits is 72, while the sum is 14.

The square root of 142331 is about 377.2678093874. The cubic root of 142331 is about 52.2115396555.

Adding to 142331 its reverse (133241), we get a palindrome (275572).

The spelling of 142331 in words is "one hundred forty-two thousand, three hundred thirty-one".