231331434111 has 10 divisors (see below), whose sum is σ = 345569179472. Its totient is φ = 154220956020.

The previous prime is 231331434107. The next prime is 231331434119. The reversal of 231331434111 is 111434133132.

231331434111 is a `hidden beast` number, since 2 + 3 + 1 + 3 + 314 + 341 + 1 + 1 = 666.

It is not a de Polignac number, because 231331434111 - 2² = 231331434107 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231331434119) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1427971735 + ... + 1427971896.

Almost surely, 2^231331434111 is an apocalyptic number.

231331434111 is a deficient number, since it is larger than the sum of its proper divisors (114237745361).

231331434111 is an equidigital number, since it uses as much as digits as its factorization.

231331434111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2855943643 (or 2855943634 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

Adding to 231331434111 its reverse (111434133132), we get a palindrome (342765567243).

The spelling of 231331434111 in words is "two hundred thirty-one billion, three hundred thirty-one million, four hundred thirty-four thousand, one hundred eleven".