131020102231 has 2 divisors, whose sum is σ = 131020102232. Its totient is φ = 131020102230.

The previous prime is 131020102223. The next prime is 131020102261. The reversal of 131020102231 is 132201020131.

It is a weak prime.

It is an emirp because it is prime and its reverse (132201020131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 131020102231 - 2³ = 131020102223 is a prime.

It is a super-2 number, since 2×131020102231² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131020102261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65510051115 + 65510051116.

It is an arithmetic number, because the mean of its divisors is an integer number (65510051116).

Almost surely, 2^131020102231 is an apocalyptic number.

131020102231 is a deficient number, since it is larger than the sum of its proper divisors (1).

131020102231 is an equidigital number, since it uses as much as digits as its factorization.

131020102231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 131020102231 its reverse (132201020131), we get a palindrome (263221122362).

The spelling of 131020102231 in words is "one hundred thirty-one billion, twenty million, one hundred two thousand, two hundred thirty-one".