131423131322220 has 24 divisors (see below), whose sum is σ = 367984767702384. Its totient is φ = 35046168352576.

The previous prime is 131423131322191. The next prime is 131423131322299. The reversal of 131423131322220 is 22223131324131.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1095192760959 + ... + 1095192761078.

It is an arithmetic number, because the mean of its divisors is an integer number (15332698654266).

Almost surely, 2^{131423131322220} is an apocalyptic number.

131423131322220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131423131322220 is an abundant number, since it is smaller than the sum of its proper divisors (236561636380164).

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

131423131322220 is a wasteful number, since it uses less digits than its factorization.

131423131322220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2190385522049 (or 2190385522047 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 30.

Adding to 131423131322220 its reverse (22223131324131), we get a palindrome (153646262646351).

The spelling of 131423131322220 in words is "one hundred thirty-one trillion, four hundred twenty-three billion, one hundred thirty-one million, three hundred twenty-two thousand, two hundred twenty".