131338541 has 4 divisors (see below), whose sum is σ = 132566112. Its totient is φ = 130110972.

The previous prime is 131338531. The next prime is 131338547. The reversal of 131338541 is 145833131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 131338541 - 2²⁶ = 64229677 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 (131338547) 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 3 ways as a sum of consecutive naturals, for example, 613625 + ... + 613838.

It is an arithmetic number, because the mean of its divisors is an integer number (33141528).

Almost surely, 2^131338541 is an apocalyptic number.

It is an amenable number.

131338541 is a deficient number, since it is larger than the sum of its proper divisors (1227571).

131338541 is a wasteful number, since it uses less digits than its factorization.

131338541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1227570.

The product of its digits is 4320, while the sum is 29.

The square root of 131338541 is about 11460.3028319499. The cubic root of 131338541 is about 508.3124292279.

The spelling of 131338541 in words is "one hundred thirty-one million, three hundred thirty-eight thousand, five hundred forty-one".