231141311 has 4 divisors (see below), whose sum is σ = 231266592. Its totient is φ = 231016032.

The previous prime is 231141271. The next prime is 231141341. The reversal of 231141311 is 113141132.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231141311 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 231141311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231141341) 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, 59831 + ... + 63576.

It is an arithmetic number, because the mean of its divisors is an integer number (57816648).

Almost surely, 2^231141311 is an apocalyptic number.

231141311 is a deficient number, since it is larger than the sum of its proper divisors (125281).

231141311 is a wasteful number, since it uses less digits than its factorization.

231141311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125280.

The product of its digits is 72, while the sum is 17.

The square root of 231141311 is about 15203.3322334283. The cubic root of 231141311 is about 613.7043346188.

Adding to 231141311 its reverse (113141132), we get a palindrome (344282443).

The spelling of 231141311 in words is "two hundred thirty-one million, one hundred forty-one thousand, three hundred eleven".