131421889 has 8 divisors (see below), whose sum is σ = 135001152. Its totient is φ = 127866480.

The previous prime is 131421887. The next prime is 131421911. The reversal of 131421889 is 988124131.

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 131421889 - 2¹ = 131421887 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131421887) 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, 5499 + ... + 17119.

It is an arithmetic number, because the mean of its divisors is an integer number (16875144).

Almost surely, 2^131421889 is an apocalyptic number.

It is an amenable number.

131421889 is a deficient number, since it is larger than the sum of its proper divisors (3579263).

131421889 is a wasteful number, since it uses less digits than its factorization.

131421889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11927.

The product of its digits is 13824, while the sum is 37.

The square root of 131421889 is about 11463.9386338204. The cubic root of 131421889 is about 508.4199322379.

The spelling of 131421889 in words is "one hundred thirty-one million, four hundred twenty-one thousand, eight hundred eighty-nine".