131011211223 has 12 divisors (see below), whose sum is σ = 189385929720. Its totient is φ = 87272724336.

The previous prime is 131011211189. The next prime is 131011211231. The reversal of 131011211223 is 322112110131.

It is not a de Polignac number, because 131011211223 - 2²⁴ = 130994434007 is a prime.

It is a super-2 number, since 2×131011211223² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 131011211196 and 131011211205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131011212223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5661408 + ... + 5684501.

It is an arithmetic number, because the mean of its divisors is an integer number (15782160810).

Almost surely, 2^131011211223 is an apocalyptic number.

131011211223 is a deficient number, since it is larger than the sum of its proper divisors (58374718497).

131011211223 is a wasteful number, since it uses less digits than its factorization.

131011211223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11347198 (or 11347195 counting only the distinct ones).

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

Adding to 131011211223 its reverse (322112110131), we get a palindrome (453123321354).

The spelling of 131011211223 in words is "one hundred thirty-one billion, eleven million, two hundred eleven thousand, two hundred twenty-three".