230731311 has 8 divisors (see below), whose sum is σ = 309420720. Its totient is φ = 152931392.

The previous prime is 230731289. The next prime is 230731321. The reversal of 230731311 is 113137032.

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 230731311 - 2¹⁰ = 230730287 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230731321) 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, 221766 + ... + 222803.

It is an arithmetic number, because the mean of its divisors is an integer number (38677590).

Almost surely, 2^230731311 is an apocalyptic number.

230731311 is a deficient number, since it is larger than the sum of its proper divisors (78689409).

230731311 is a wasteful number, since it uses less digits than its factorization.

230731311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444745.

The product of its (nonzero) digits is 378, while the sum is 21.

The square root of 230731311 is about 15189.8423625790. The cubic root of 230731311 is about 613.3412555753.

Adding to 230731311 its reverse (113137032), we get a palindrome (343868343).

The spelling of 230731311 in words is "two hundred thirty million, seven hundred thirty-one thousand, three hundred eleven".