131331826 has 8 divisors (see below), whose sum is σ = 197047260. Its totient is φ = 65649408.

The previous prime is 131331803. The next prime is 131331829. The reversal of 131331826 is 628133131.

It can be written as a sum of positive squares in 2 ways, for example, as 97121025 + 34210801 = 9855^2 + 5849^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 131331794 and 131331803.

It is not an unprimeable number, because it can be changed into a prime (131331829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8470 + ... + 18286.

Almost surely, 2^131331826 is an apocalyptic number.

131331826 is a deficient number, since it is larger than the sum of its proper divisors (65715434).

131331826 is an equidigital number, since it uses as much as digits as its factorization.

131331826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16508.

The product of its digits is 2592, while the sum is 28.

The square root of 131331826 is about 11460.0098603797. The cubic root of 131331826 is about 508.3037661802.

Adding to 131331826 its reverse (628133131), we get a palindrome (759464957).

The spelling of 131331826 in words is "one hundred thirty-one million, three hundred thirty-one thousand, eight hundred twenty-six".