231232231131 has 32 divisors (see below), whose sum is σ = 340695680256. Its totient is φ = 138333360000.

The previous prime is 231232231127. The next prime is 231232231249. The reversal of 231232231131 is 131132232132.

It is not a de Polignac number, because 231232231131 - 2² = 231232231127 is a prime.

It is a super-2 number, since 2×231232231131² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (231232235131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 998425 + ... + 1208021.

It is an arithmetic number, because the mean of its divisors is an integer number (10646740008).

Almost surely, 2^231232231131 is an apocalyptic number.

231232231131 is a deficient number, since it is larger than the sum of its proper divisors (109463449125).

231232231131 is a wasteful number, since it uses less digits than its factorization.

231232231131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210043.

The product of its digits is 1296, while the sum is 24.

Adding to 231232231131 its reverse (131132232132), we get a palindrome (362364463263).

The spelling of 231232231131 in words is "two hundred thirty-one billion, two hundred thirty-two million, two hundred thirty-one thousand, one hundred thirty-one".