131031121032231 has 16 divisors (see below), whose sum is σ = 201909913632000. Its totient is φ = 74033634996288.

The previous prime is 131031121032221. The next prime is 131031121032247. The reversal of 131031121032231 is 132230121130131.

It is not a de Polignac number, because 131031121032231 - 2⁶ = 131031121032167 is a prime.

It is a super-2 number, since 2×131031121032231² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131031121032221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35053802581 + ... + 35053806318.

It is an arithmetic number, because the mean of its divisors is an integer number (12619369602000).

Almost surely, 2^{131031121032231} is an apocalyptic number.

131031121032231 is a deficient number, since it is larger than the sum of its proper divisors (70878792599769).

131031121032231 is an equidigital number, since it uses as much as digits as its factorization.

131031121032231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70107608998.

The product of its (nonzero) digits is 648, while the sum is 24.

Adding to 131031121032231 its reverse (132230121130131), we get a palindrome (263261242162362).

The spelling of 131031121032231 in words is "one hundred thirty-one trillion, thirty-one billion, one hundred twenty-one million, thirty-two thousand, two hundred thirty-one".