142232311 has 8 divisors (see below), whose sum is σ = 155113280. Its totient is φ = 129628512.

The previous prime is 142232221. The next prime is 142232317. The reversal of 142232311 is 113232241.

It is a happy number.

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

It is not a de Polignac number, because 142232311 - 2⁹ = 142231799 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142232317) 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, 68220 + ... + 70273.

It is an arithmetic number, because the mean of its divisors is an integer number (19389160).

Almost surely, 2^142232311 is an apocalyptic number.

142232311 is a deficient number, since it is larger than the sum of its proper divisors (12880969).

142232311 is a wasteful number, since it uses less digits than its factorization.

142232311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138585.

The product of its digits is 288, while the sum is 19.

The square root of 142232311 is about 11926.1188573651. The cubic root of 142232311 is about 521.9946944358.

Adding to 142232311 its reverse (113232241), we get a palindrome (255464552).

It can be divided in two parts, 1422 and 32311, that added together give a palindrome (33733).

The spelling of 142232311 in words is "one hundred forty-two million, two hundred thirty-two thousand, three hundred eleven".