131342430201820 has 48 divisors (see below), whose sum is σ = 283279953192768. Its totient is φ = 51115920791040.

The previous prime is 131342430201797. The next prime is 131342430201821. The reversal of 131342430201820 is 28102034243131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131342430201821) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31829929 + ... + 35718751.

It is an arithmetic number, because the mean of its divisors is an integer number (5901665691516).

Almost surely, 2^{131342430201820} is an apocalyptic number.

131342430201820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131342430201820 is an abundant number, since it is smaller than the sum of its proper divisors (151937522990948).

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

131342430201820 is a wasteful number, since it uses less digits than its factorization.

131342430201820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3934510 (or 3934508 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 34.

Adding to 131342430201820 its reverse (28102034243131), we get a palindrome (159444464444951).

The spelling of 131342430201820 in words is "one hundred thirty-one trillion, three hundred forty-two billion, four hundred thirty million, two hundred one thousand, eight hundred twenty".