131548989 has 32 divisors (see below), whose sum is σ = 216921600. Its totient is φ = 69716160.

The previous prime is 131548943. The next prime is 131549003. The reversal of 131548989 is 989845131.

It is not a de Polignac number, because 131548989 - 2⁸ = 131548733 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131548909) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 82 + ... + 16220.

It is an arithmetic number, because the mean of its divisors is an integer number (6778800).

Almost surely, 2^131548989 is an apocalyptic number.

131548989 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

131548989 is a deficient number, since it is larger than the sum of its proper divisors (85372611).

131548989 is a wasteful number, since it uses less digits than its factorization.

131548989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16185.

The product of its digits is 311040, while the sum is 48.

The square root of 131548989 is about 11469.4807641846. The cubic root of 131548989 is about 508.5837795070.

The spelling of 131548989 in words is "one hundred thirty-one million, five hundred forty-eight thousand, nine hundred eighty-nine".