131347489 has 12 divisors (see below), whose sum is σ = 164546004. Its totient is φ = 103922784.

The previous prime is 131347451. The next prime is 131347493. The reversal of 131347489 is 984743131.

It can be written as a sum of positive squares in 2 ways, for example, as 88510464 + 42837025 = 9408^2 + 6545^2 .

It is not a de Polignac number, because 131347489 - 2¹¹ = 131345441 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131347439) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 102462 + ... + 103735.

It is an arithmetic number, because the mean of its divisors is an integer number (13712167).

Almost surely, 2^131347489 is an apocalyptic number.

It is an amenable number.

131347489 is a deficient number, since it is larger than the sum of its proper divisors (33198515).

131347489 is a wasteful number, since it uses less digits than its factorization.

131347489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206224 (or 206217 counting only the distinct ones).

The product of its digits is 72576, while the sum is 40.

The square root of 131347489 is about 11460.6932163809. The cubic root of 131347489 is about 508.3239726187.

The spelling of 131347489 in words is "one hundred thirty-one million, three hundred forty-seven thousand, four hundred eighty-nine".