131487143621 has 4 divisors (see below), whose sum is σ = 131544042144. Its totient is φ = 131430245100.

The previous prime is 131487143597. The next prime is 131487143657. The reversal of 131487143621 is 126341784131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 126341784131 = 4673 ⋅27036547.

It is a cyclic number.

It is not a de Polignac number, because 131487143621 - 2²² = 131482949317 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 (131487142621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28445795 + ... + 28450416.

It is an arithmetic number, because the mean of its divisors is an integer number (32886010536).

Almost surely, 2^131487143621 is an apocalyptic number.

It is an amenable number.

131487143621 is a deficient number, since it is larger than the sum of its proper divisors (56898523).

131487143621 is an equidigital number, since it uses as much as digits as its factorization.

131487143621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56898522.

The product of its digits is 96768, while the sum is 41.

The spelling of 131487143621 in words is "one hundred thirty-one billion, four hundred eighty-seven million, one hundred forty-three thousand, six hundred twenty-one".