231131566234 has 16 divisors (see below), whose sum is σ = 355378504320. Its totient is φ = 112675638240.

The previous prime is 231131566103. The next prime is 231131566277. The reversal of 231131566234 is 432665131132.

It is a junction number, because it is equal to n+sod(n) for n = 231131566193 and 231131566202.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 763074 + ... + 1022029.

It is an arithmetic number, because the mean of its divisors is an integer number (22211156520).

Almost surely, 2^231131566234 is an apocalyptic number.

231131566234 is a deficient number, since it is larger than the sum of its proper divisors (124246938086).

231131566234 is a wasteful number, since it uses less digits than its factorization.

231131566234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1786725.

The product of its digits is 77760, while the sum is 37.

Adding to 231131566234 its reverse (432665131132), we get a palindrome (663796697366).

The spelling of 231131566234 in words is "two hundred thirty-one billion, one hundred thirty-one million, five hundred sixty-six thousand, two hundred thirty-four".