131201421023420 has 48 divisors (see below), whose sum is σ = 300601767610368. Its totient is φ = 47704649002560.

The previous prime is 131201421023369. The next prime is 131201421023423. The reversal of 131201421023420 is 24320124102131.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 131201421023420.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131201421023423) 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, 28869644 + ... + 33103763.

It is an arithmetic number, because the mean of its divisors is an integer number (6262536825216).

Almost surely, 2^{131201421023420} is an apocalyptic number.

131201421023420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131201421023420 is an abundant number, since it is smaller than the sum of its proper divisors (169400346586948).

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

131201421023420 is a wasteful number, since it uses less digits than its factorization.

131201421023420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61983050 (or 61983048 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

Adding to 131201421023420 its reverse (24320124102131), we get a palindrome (155521545125551).

The spelling of 131201421023420 in words is "one hundred thirty-one trillion, two hundred one billion, four hundred twenty-one million, twenty-three thousand, four hundred twenty".