231203141 has 8 divisors (see below), whose sum is σ = 255061464. Its totient is φ = 208212480.

The previous prime is 231203129. The next prime is 231203143. The reversal of 231203141 is 141302132.

It can be written as a sum of positive squares in 4 ways, for example, as 26112100 + 205091041 = 5110^2 + 14321^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231203141 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 (231203143) 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, 216356 + ... + 217421.

It is an arithmetic number, because the mean of its divisors is an integer number (31882683).

Almost surely, 2^231203141 is an apocalyptic number.

It is an amenable number.

231203141 is a deficient number, since it is larger than the sum of its proper divisors (23858323).

231203141 is a wasteful number, since it uses less digits than its factorization.

231203141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433831.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 231203141 is about 15205.3655332583. The cubic root of 231203141 is about 613.7590514439.

Adding to 231203141 its reverse (141302132), we get a palindrome (372505273).

The spelling of 231203141 in words is "two hundred thirty-one million, two hundred three thousand, one hundred forty-one".