131468821 has 4 divisors (see below), whose sum is σ = 143420544. Its totient is φ = 119517100.

The previous prime is 131468819. The next prime is 131468863. The reversal of 131468821 is 128864131.

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.

It is a cyclic number.

It is not a de Polignac number, because 131468821 - 2¹ = 131468819 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 (131468321) 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, 5975845 + ... + 5975866.

It is an arithmetic number, because the mean of its divisors is an integer number (35855136).

Almost surely, 2^131468821 is an apocalyptic number.

131468821 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

131468821 is a deficient number, since it is larger than the sum of its proper divisors (11951723).

131468821 is a wasteful number, since it uses less digits than its factorization.

131468821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11951722.

The product of its digits is 9216, while the sum is 34.

The square root of 131468821 is about 11465.9853915832. The cubic root of 131468821 is about 508.4804455579.

The spelling of 131468821 in words is "one hundred thirty-one million, four hundred sixty-eight thousand, eight hundred twenty-one".