131020203230320 has 80 divisors (see below), whose sum is σ = 314451582382080. Its totient is φ = 50716998892800.

The previous prime is 131020203230261. The next prime is 131020203230321. The reversal of 131020203230320 is 23032302020131.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 131020203230291 and 131020203230300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131020203230321) 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, 343316571 + ... + 343697989.

It is an arithmetic number, because the mean of its divisors is an integer number (3930644779776).

Almost surely, 2^{131020203230320} is an apocalyptic number.

131020203230320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131020203230320 is an abundant number, since it is smaller than the sum of its proper divisors (183431379151760).

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

131020203230320 is a wasteful number, since it uses less digits than its factorization.

131020203230320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 519974 (or 519968 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 131020203230320 its reverse (23032302020131), we get a palindrome (154052505250451).

The spelling of 131020203230320 in words is "one hundred thirty-one trillion, twenty billion, two hundred three million, two hundred thirty thousand, three hundred twenty".