231301331111 has 8 divisors (see below), whose sum is σ = 243480584880. Its totient is φ = 219122627328.

The previous prime is 231301331087. The next prime is 231301331113. The reversal of 231301331111 is 111133103132.

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 231301331111 - 2³⁴ = 214121461927 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 (231301331113) 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, 943925 + ... + 1163441.

It is an arithmetic number, because the mean of its divisors is an integer number (30435073110).

Almost surely, 2^231301331111 is an apocalyptic number.

231301331111 is a deficient number, since it is larger than the sum of its proper divisors (12179253769).

231301331111 is a wasteful number, since it uses less digits than its factorization.

231301331111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274993.

The product of its (nonzero) digits is 162, while the sum is 20.

Adding to 231301331111 its reverse (111133103132), we get a palindrome (342434434243).

The spelling of 231301331111 in words is "two hundred thirty-one billion, three hundred one million, three hundred thirty-one thousand, one hundred eleven".