131138426 has 8 divisors (see below), whose sum is σ = 196838964. Its totient is φ = 65525440.

The previous prime is 131138419. The next prime is 131138431. The reversal of 131138426 is 624831131.

It can be written as a sum of positive squares in 2 ways, for example, as 129982801 + 1155625 = 11401^2 + 1075^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18005 + ... + 24216.

Almost surely, 2^131138426 is an apocalyptic number.

131138426 is a deficient number, since it is larger than the sum of its proper divisors (65700538).

131138426 is a wasteful number, since it uses less digits than its factorization.

131138426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43776.

The product of its digits is 3456, while the sum is 29.

The square root of 131138426 is about 11451.5687134995. The cubic root of 131138426 is about 508.0541332562.

Adding to 131138426 its reverse (624831131), we get a palindrome (755969557).

The spelling of 131138426 in words is "one hundred thirty-one million, one hundred thirty-eight thousand, four hundred twenty-six".