131738437 has 4 divisors (see below), whose sum is σ = 135988096. Its totient is φ = 127488780.

The previous prime is 131738429. The next prime is 131738449. The reversal of 131738437 is 734837131.

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 131738437 - 2³ = 131738429 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131738396 and 131738405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131738407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2124783 + ... + 2124844.

It is an arithmetic number, because the mean of its divisors is an integer number (33997024).

Almost surely, 2^131738437 is an apocalyptic number.

It is an amenable number.

131738437 is a deficient number, since it is larger than the sum of its proper divisors (4249659).

131738437 is an equidigital number, since it uses as much as digits as its factorization.

131738437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4249658.

The product of its digits is 42336, while the sum is 37.

The square root of 131738437 is about 11477.7365800057. The cubic root of 131738437 is about 508.8278051110.

The spelling of 131738437 in words is "one hundred thirty-one million, seven hundred thirty-eight thousand, four hundred thirty-seven".