131102131231 has 4 divisors (see below), whose sum is σ = 132059081232. Its totient is φ = 130145181232.

The previous prime is 131102131229. The next prime is 131102131243. The reversal of 131102131231 is 132131201131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 132131201131 = 223 ⋅592516597.

It is a cyclic number.

It is not a de Polignac number, because 131102131231 - 2¹ = 131102131229 is a prime.

It is a super-2 number, since 2×131102131231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131102131199 and 131102131208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131102131331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 478474795 + ... + 478475068.

It is an arithmetic number, because the mean of its divisors is an integer number (33014770308).

Almost surely, 2^131102131231 is an apocalyptic number.

131102131231 is a deficient number, since it is larger than the sum of its proper divisors (956950001).

131102131231 is an equidigital number, since it uses as much as digits as its factorization.

131102131231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 956950000.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 131102131231 its reverse (132131201131), we get a palindrome (263233332362).

The spelling of 131102131231 in words is "one hundred thirty-one billion, one hundred two million, one hundred thirty-one thousand, two hundred thirty-one".