231131122103 has 32 divisors (see below), whose sum is σ = 286542157824. Its totient is φ = 181914435072.

The previous prime is 231131122073. The next prime is 231131122177. The reversal of 231131122103 is 301221131132.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 231131122103 - 2⁸ = 231131121847 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 (231131122303) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1707800 + ... + 1838162.

It is an arithmetic number, because the mean of its divisors is an integer number (8954442432).

Almost surely, 2^231131122103 is an apocalyptic number.

231131122103 is a deficient number, since it is larger than the sum of its proper divisors (55411035721).

231131122103 is a wasteful number, since it uses less digits than its factorization.

231131122103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130751.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 231131122103 its reverse (301221131132), we get a palindrome (532352253235).

The spelling of 231131122103 in words is "two hundred thirty-one billion, one hundred thirty-one million, one hundred twenty-two thousand, one hundred three".