131904338 has 4 divisors (see below), whose sum is σ = 197856510. Its totient is φ = 65952168.

The previous prime is 131904337. The next prime is 131904341. The reversal of 131904338 is 833409131.

It is a happy number.

131904338 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 833409131 = 503 ⋅1656877.

It can be written as a sum of positive squares in only one way, i.e., 128074489 + 3829849 = 11317^2 + 1957^2 .

It is not an unprimeable number, because it can be changed into a prime (131904337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32976083 + ... + 32976086.

Almost surely, 2^131904338 is an apocalyptic number.

131904338 is a deficient number, since it is larger than the sum of its proper divisors (65952172).

131904338 is an equidigital number, since it uses as much as digits as its factorization.

131904338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65952171.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 131904338 is about 11484.9613843495. The cubic root of 131904338 is about 509.0413080521.

The spelling of 131904338 in words is "one hundred thirty-one million, nine hundred four thousand, three hundred thirty-eight".