131221440141 has 8 divisors (see below), whose sum is σ = 190867549344. Its totient is φ = 79528145520.

The previous prime is 131221440139. The next prime is 131221440151. The reversal of 131221440141 is 141044122131.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 131221440141 - 2¹ = 131221440139 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131221440151) 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, 1988203606 + ... + 1988203671.

It is an arithmetic number, because the mean of its divisors is an integer number (23858443668).

Almost surely, 2^131221440141 is an apocalyptic number.

131221440141 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

131221440141 is a deficient number, since it is larger than the sum of its proper divisors (59646109203).

131221440141 is a wasteful number, since it uses less digits than its factorization.

131221440141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3976407291.

The product of its (nonzero) digits is 768, while the sum is 24.

Adding to 131221440141 its reverse (141044122131), we get a palindrome (272265562272).

The spelling of 131221440141 in words is "one hundred thirty-one billion, two hundred twenty-one million, four hundred forty thousand, one hundred forty-one".