231142141 has 4 divisors (see below), whose sum is σ = 231272284. Its totient is φ = 231012000.

The previous prime is 231142123. The next prime is 231142147. The reversal of 231142141 is 141241132.

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

It can be written as a sum of positive squares in 2 ways, for example, as 122544900 + 108597241 = 11070^2 + 10421^2 .

It is a cyclic number.

It is not a de Polignac number, because 231142141 - 2¹⁷ = 231011069 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 (231142147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62370 + ... + 65971.

It is an arithmetic number, because the mean of its divisors is an integer number (57818071).

Almost surely, 2^231142141 is an apocalyptic number.

It is an amenable number.

231142141 is a deficient number, since it is larger than the sum of its proper divisors (130143).

231142141 is a wasteful number, since it uses less digits than its factorization.

231142141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130142.

The product of its digits is 192, while the sum is 19.

The square root of 231142141 is about 15203.3595300512. The cubic root of 231142141 is about 613.7050691968.

Adding to 231142141 its reverse (141241132), we get a palindrome (372383273).

The spelling of 231142141 in words is "two hundred thirty-one million, one hundred forty-two thousand, one hundred forty-one".