231359311 has 4 divisors (see below), whose sum is σ = 231391192. Its totient is φ = 231327432.

The previous prime is 231359309. The next prime is 231359339. The reversal of 231359311 is 113953132.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 231359311 - 2¹ = 231359309 is a prime.

It is the 15211-st Hogben number.

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 231359311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231350311) by changing a digit.

It is a nontrivial repunit in base 15210.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 820 + ... + 21526.

It is an arithmetic number, because the mean of its divisors is an integer number (57847798).

Almost surely, 2^231359311 is an apocalyptic number.

231359311 is a deficient number, since it is larger than the sum of its proper divisors (31881).

231359311 is a wasteful number, since it uses less digits than its factorization.

231359311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31880.

The product of its digits is 2430, while the sum is 28.

The square root of 231359311 is about 15210.5000246540. The cubic root of 231359311 is about 613.8972115880.

The spelling of 231359311 in words is "two hundred thirty-one million, three hundred fifty-nine thousand, three hundred eleven".