131820889 has 8 divisors (see below), whose sum is σ = 137999232. Its totient is φ = 125679840.

The previous prime is 131820883. The next prime is 131820937. The reversal of 131820889 is 988028131.

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 131820889 - 2³ = 131820881 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 8.

It is not an unprimeable number, because it can be changed into a prime (131820881) 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, 1957 + ... + 16354.

It is an arithmetic number, because the mean of its divisors is an integer number (17249904).

Almost surely, 2^131820889 is an apocalyptic number.

It is an amenable number.

131820889 is a deficient number, since it is larger than the sum of its proper divisors (6178343).

131820889 is a wasteful number, since it uses less digits than its factorization.

131820889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18647.

The product of its (nonzero) digits is 27648, while the sum is 40.

The square root of 131820889 is about 11481.3278413257. The cubic root of 131820889 is about 508.9339374379.

The spelling of 131820889 in words is "one hundred thirty-one million, eight hundred twenty thousand, eight hundred eighty-nine".