131325730 has 16 divisors (see below), whose sum is σ = 239043960. Its totient is φ = 51939712.

The previous prime is 131325713. The next prime is 131325737. The reversal of 131325730 is 37523131.

It can be written as a sum of positive squares in 4 ways, for example, as 60109009 + 71216721 = 7753^2 + 8439^2 .

It is a junction number, because it is equal to n+sod(n) for n = 131325695 and 131325704.

It is not an unprimeable number, because it can be changed into a prime (131325737) 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 7 ways as a sum of consecutive naturals, for example, 72889 + ... + 74668.

Almost surely, 2^131325730 is an apocalyptic number.

131325730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131325730 is a deficient number, since it is larger than the sum of its proper divisors (107718230).

131325730 is a wasteful number, since it uses less digits than its factorization.

131325730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147653.

The product of its (nonzero) digits is 1890, while the sum is 25.

The square root of 131325730 is about 11459.7438889357. The cubic root of 131325730 is about 508.2959014511.

Adding to 131325730 its reverse (37523131), we get a palindrome (168848861).

The spelling of 131325730 in words is "one hundred thirty-one million, three hundred twenty-five thousand, seven hundred thirty".