131489739 has 12 divisors (see below), whose sum is σ = 190762000. Its totient is φ = 87275664.

The previous prime is 131489737. The next prime is 131489783. The reversal of 131489739 is 937984131.

131489739 is a `hidden beast` number, since 131 + 489 + 7 + 39 = 666.

It is not a de Polignac number, because 131489739 - 2¹ = 131489737 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131489694 and 131489703.

It is not an unprimeable number, because it can be changed into a prime (131489737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29839 + ... + 33960.

Almost surely, 2^131489739 is an apocalyptic number.

131489739 is a deficient number, since it is larger than the sum of its proper divisors (59272261).

131489739 is a wasteful number, since it uses less digits than its factorization.

131489739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64034 (or 64031 counting only the distinct ones).

The product of its digits is 163296, while the sum is 45.

The square root of 131489739 is about 11466.8975315907. The cubic root of 131489739 is about 508.5074122303.

The spelling of 131489739 in words is "one hundred thirty-one million, four hundred eighty-nine thousand, seven hundred thirty-nine".