131489904 has 80 divisors (see below), whose sum is σ = 418084352. Its totient is φ = 34677504.

The previous prime is 131489893. The next prime is 131489909. The reversal of 131489904 is 409984131.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131489909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10684 + ... + 19419.

Almost surely, 2^131489904 is an apocalyptic number.

131489904 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

131489904 is an abundant number, since it is smaller than the sum of its proper divisors (286594448).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131489904 is a wasteful number, since it uses less digits than its factorization.

131489904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30134 (or 30128 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 39.

The square root of 131489904 is about 11466.9047262110. The cubic root of 131489904 is about 508.5076249305.

The spelling of 131489904 in words is "one hundred thirty-one million, four hundred eighty-nine thousand, nine hundred four".