231105360031 has 24 divisors (see below), whose sum is σ = 306547007760. Its totient is φ = 172096549632.

The previous prime is 231105360029. The next prime is 231105360067. The reversal of 231105360031 is 130063501132.

It is not a de Polignac number, because 231105360031 - 2¹ = 231105360029 is a prime.

It is a super-2 number, since 2×231105360031² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 231105359978 and 231105360005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231105360011) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10659841 + ... + 10681498.

It is an arithmetic number, because the mean of its divisors is an integer number (12772791990).

Almost surely, 2^231105360031 is an apocalyptic number.

231105360031 is a deficient number, since it is larger than the sum of its proper divisors (75441647729).

231105360031 is a wasteful number, since it uses less digits than its factorization.

231105360031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21341383 (or 21341376 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 25.

Adding to 231105360031 its reverse (130063501132), we get a palindrome (361168861163).

The spelling of 231105360031 in words is "two hundred thirty-one billion, one hundred five million, three hundred sixty thousand, thirty-one".