131387328421 has 8 divisors (see below), whose sum is σ = 131618058624. Its totient is φ = 131156773440.

The previous prime is 131387328419. The next prime is 131387328439. The reversal of 131387328421 is 124823783131.

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

It is a cyclic number.

It is not a de Polignac number, because 131387328421 - 2¹ = 131387328419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131387328521) 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, 1504861 + ... + 1589773.

It is an arithmetic number, because the mean of its divisors is an integer number (16452257328).

Almost surely, 2^131387328421 is an apocalyptic number.

It is an amenable number.

131387328421 is a deficient number, since it is larger than the sum of its proper divisors (230730203).

131387328421 is an equidigital number, since it uses as much as digits as its factorization.

131387328421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87611.

The product of its digits is 193536, while the sum is 43.

The spelling of 131387328421 in words is "one hundred thirty-one billion, three hundred eighty-seven million, three hundred twenty-eight thousand, four hundred twenty-one".