131204223 has 24 divisors (see below), whose sum is σ = 198678480. Its totient is φ = 83341440.

The previous prime is 131204221. The next prime is 131204251. The reversal of 131204223 is 322402131.

It is not a de Polignac number, because 131204223 - 2¹ = 131204221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 131204196 and 131204205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131204221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11733 + ... + 20001.

It is an arithmetic number, because the mean of its divisors is an integer number (8278270).

Almost surely, 2^131204223 is an apocalyptic number.

131204223 is a deficient number, since it is larger than the sum of its proper divisors (67474257).

131204223 is a wasteful number, since it uses less digits than its factorization.

131204223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8359 (or 8356 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 131204223 is about 11454.4411910839. The cubic root of 131204223 is about 508.1390889010.

Adding to 131204223 its reverse (322402131), we get a palindrome (453606354).

The spelling of 131204223 in words is "one hundred thirty-one million, two hundred four thousand, two hundred twenty-three".