231131241245 has 16 divisors (see below), whose sum is σ = 281480355072. Its totient is φ = 182160424320.

The previous prime is 231131241217. The next prime is 231131241247. The reversal of 231131241245 is 542142131132.

It is a happy number.

It is not a de Polignac number, because 231131241245 - 2¹⁴ = 231131224861 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 (231131241247) 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 15 ways as a sum of consecutive naturals, for example, 212729 + ... + 712401.

It is an arithmetic number, because the mean of its divisors is an integer number (17592522192).

Almost surely, 2^231131241245 is an apocalyptic number.

It is an amenable number.

231131241245 is a deficient number, since it is larger than the sum of its proper divisors (50349113827).

231131241245 is a wasteful number, since it uses less digits than its factorization.

231131241245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501052.

The product of its digits is 5760, while the sum is 29.

Adding to 231131241245 its reverse (542142131132), we get a palindrome (773273372377).

The spelling of 231131241245 in words is "two hundred thirty-one billion, one hundred thirty-one million, two hundred forty-one thousand, two hundred forty-five".