131101313231 has 32 divisors (see below), whose sum is σ = 162549504000. Its totient is φ = 103258108800.

The previous prime is 131101313197. The next prime is 131101313243. The reversal of 131101313231 is 132313101131.

It is a de Polignac number, because none of the positive numbers 2^k-131101313231 is a prime.

It is a super-2 number, since 2×131101313231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131101312231) 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, 858581 + ... + 999681.

It is an arithmetic number, because the mean of its divisors is an integer number (5079672000).

Almost surely, 2^131101313231 is an apocalyptic number.

131101313231 is a deficient number, since it is larger than the sum of its proper divisors (31448190769).

131101313231 is a wasteful number, since it uses less digits than its factorization.

131101313231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141359.

The product of its (nonzero) digits is 162, while the sum is 20.

Adding to 131101313231 its reverse (132313101131), we get a palindrome (263414414362).

The spelling of 131101313231 in words is "one hundred thirty-one billion, one hundred one million, three hundred thirteen thousand, two hundred thirty-one".