131123010320 has 40 divisors (see below), whose sum is σ = 304984734936. Its totient is φ = 52427916288.

The previous prime is 131123010313. The next prime is 131123010329. The reversal of 131123010320 is 23010321131.

It can be written as a sum of positive squares in 4 ways, for example, as 26812097536 + 104310912784 = 163744^2 + 322972^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (131123010329) 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 7 ways as a sum of consecutive naturals, for example, 133547 + ... + 529226.

Almost surely, 2^131123010320 is an apocalyptic number.

131123010320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131123010320 is an abundant number, since it is smaller than the sum of its proper divisors (173861724616).

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

131123010320 is a wasteful number, since it uses less digits than its factorization.

131123010320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 665259 (or 665253 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 131123010320 its reverse (23010321131), we get a palindrome (154133331451).

The spelling of 131123010320 in words is "one hundred thirty-one billion, one hundred twenty-three million, ten thousand, three hundred twenty".