131931349 has 16 divisors (see below), whose sum is σ = 147865536. Its totient is φ = 116697600.

The previous prime is 131931347. The next prime is 131931377. The reversal of 131931349 is 943139131.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 131931349 - 2¹ = 131931347 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131931347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64074 + ... + 66100.

It is an arithmetic number, because the mean of its divisors is an integer number (9241596).

Almost surely, 2^131931349 is an apocalyptic number.

It is an amenable number.

131931349 is a deficient number, since it is larger than the sum of its proper divisors (15934187).

131931349 is a wasteful number, since it uses less digits than its factorization.

131931349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2196.

The product of its digits is 8748, while the sum is 34.

The square root of 131931349 is about 11486.1372532283. The cubic root of 131931349 is about 509.0760523639.

The spelling of 131931349 in words is "one hundred thirty-one million, nine hundred thirty-one thousand, three hundred forty-nine".