131211102231 has 40 divisors (see below), whose sum is σ = 220723143168. Its totient is φ = 76956642000.

The previous prime is 131211102223. The next prime is 131211102257. The reversal of 131211102231 is 132201112131.

It is not a de Polignac number, because 131211102231 - 2³ = 131211102223 is a prime.

It is a super-2 number, since 2×131211102231² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131211102221) 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 in 39 ways as a sum of consecutive naturals, for example, 2347585 + ... + 2402826.

Almost surely, 2^131211102231 is an apocalyptic number.

131211102231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

131211102231 is a deficient number, since it is larger than the sum of its proper divisors (89512040937).

131211102231 is a wasteful number, since it uses less digits than its factorization.

131211102231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4750465 (or 4750456 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 131211102231 its reverse (132201112131), we get a palindrome (263412214362).

The spelling of 131211102231 in words is "one hundred thirty-one billion, two hundred eleven million, one hundred two thousand, two hundred thirty-one".