131020321011320 has 32 divisors (see below), whose sum is σ = 317472316297920. Its totient is φ = 48376733911680.

The previous prime is 131020321011311. The next prime is 131020321011329. The reversal of 131020321011320 is 23110123020131.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (131020321011311) and next prime (131020321011329).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 131020321011292 and 131020321011301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131020321011329) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125981077376 + ... + 125981078415.

It is an arithmetic number, because the mean of its divisors is an integer number (9921009884310).

Almost surely, 2^{131020321011320} is an apocalyptic number.

131020321011320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131020321011320 is an abundant number, since it is smaller than the sum of its proper divisors (186451995286600).

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

131020321011320 is a wasteful number, since it uses less digits than its factorization.

131020321011320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251962155815 (or 251962155811 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 131020321011320 its reverse (23110123020131), we get a palindrome (154130444031451).

The spelling of 131020321011320 in words is "one hundred thirty-one trillion, twenty billion, three hundred twenty-one million, eleven thousand, three hundred twenty".