131123023206 has 32 divisors (see below), whose sum is σ = 299728036608. Its totient is φ = 37461437280.

The previous prime is 131123023201. The next prime is 131123023217. The reversal of 131123023206 is 602320321131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131123023201) 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 15 ways as a sum of consecutive naturals, for example, 675501 + ... + 847671.

It is an arithmetic number, because the mean of its divisors is an integer number (9366501144).

Almost surely, 2^131123023206 is an apocalyptic number.

131123023206 is an abundant number, since it is smaller than the sum of its proper divisors (168605013402).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131123023206 is a wasteful number, since it uses less digits than its factorization.

131123023206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190316.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 131123023206 its reverse (602320321131), we get a palindrome (733443344337).

The spelling of 131123023206 in words is "one hundred thirty-one billion, one hundred twenty-three million, twenty-three thousand, two hundred six".