131012021320 has 32 divisors (see below), whose sum is σ = 307593443520. Its totient is φ = 50126338240.

The previous prime is 131012021293. The next prime is 131012021321. The reversal of 131012021320 is 23120210131.

It is a junction number, because it is equal to n+sod(n) for n = 131012021294 and 131012021303.

It is not an unprimeable number, because it can be changed into a prime (131012021321) 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, 71201266 + ... + 71203105.

It is an arithmetic number, because the mean of its divisors is an integer number (9612295110).

Almost surely, 2^131012021320 is an apocalyptic number.

131012021320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131012021320 is an abundant number, since it is smaller than the sum of its proper divisors (176581422200).

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

131012021320 is a wasteful number, since it uses less digits than its factorization.

131012021320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142404405 (or 142404401 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 131012021320 its reverse (23120210131), we get a palindrome (154132231451).

The spelling of 131012021320 in words is "one hundred thirty-one billion, twelve million, twenty-one thousand, three hundred twenty".