131530326 has 16 divisors (see below), whose sum is σ = 278535024. Its totient is φ = 41264384.

The previous prime is 131530291. The next prime is 131530387. The reversal of 131530326 is 623035131.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 131530296 and 131530305.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 644655 + ... + 644858.

It is an arithmetic number, because the mean of its divisors is an integer number (17408439).

Almost surely, 2^131530326 is an apocalyptic number.

131530326 is an abundant number, since it is smaller than the sum of its proper divisors (147004698).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131530326 is a wasteful number, since it uses less digits than its factorization.

131530326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1289535.

The product of its (nonzero) digits is 1620, while the sum is 24.

The square root of 131530326 is about 11468.6671413901. The cubic root of 131530326 is about 508.5597272559.

Adding to 131530326 its reverse (623035131), we get a palindrome (754565457).

The spelling of 131530326 in words is "one hundred thirty-one million, five hundred thirty thousand, three hundred twenty-six".