131738399 has 4 divisors (see below), whose sum is σ = 141872136. Its totient is φ = 121604664.

The previous prime is 131738363. The next prime is 131738401. The reversal of 131738399 is 993837131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 131738399 - 2¹² = 131734303 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 (131738309) 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 3 ways as a sum of consecutive naturals, for example, 5066849 + ... + 5066874.

It is an arithmetic number, because the mean of its divisors is an integer number (35468034).

Almost surely, 2^131738399 is an apocalyptic number.

131738399 is a deficient number, since it is larger than the sum of its proper divisors (10133737).

131738399 is a wasteful number, since it uses less digits than its factorization.

131738399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10133736.

The product of its digits is 122472, while the sum is 44.

The square root of 131738399 is about 11477.7349246269. The cubic root of 131738399 is about 508.8277561872.

The spelling of 131738399 in words is "one hundred thirty-one million, seven hundred thirty-eight thousand, three hundred ninety-nine".