231534311 has 8 divisors (see below), whose sum is σ = 234124800. Its totient is φ = 228958488.

The previous prime is 231534293. The next prime is 231534341. The reversal of 231534311 is 113435132.

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

It is a cyclic number.

It is not a de Polignac number, because 231534311 - 2¹⁴ = 231517927 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 (231534341) 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 7 ways as a sum of consecutive naturals, for example, 29750 + ... + 36716.

It is an arithmetic number, because the mean of its divisors is an integer number (29265600).

Almost surely, 2^231534311 is an apocalyptic number.

231534311 is a deficient number, since it is larger than the sum of its proper divisors (2590489).

231534311 is a wasteful number, since it uses less digits than its factorization.

231534311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7333.

The product of its digits is 1080, while the sum is 23.

The square root of 231534311 is about 15216.2515423477. The cubic root of 231534311 is about 614.0519563669.

Adding to 231534311 its reverse (113435132), we get a palindrome (344969443).

The spelling of 231534311 in words is "two hundred thirty-one million, five hundred thirty-four thousand, three hundred eleven".