131344450 has 24 divisors (see below), whose sum is σ = 250906932. Its totient is φ = 51117120.

The previous prime is 131344417. The next prime is 131344453. The reversal of 131344450 is 54443131.

It can be written as a sum of positive squares in 6 ways, for example, as 39050001 + 92294449 = 6249^2 + 9607^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (131344453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33649 + ... + 37348.

Almost surely, 2^131344450 is an apocalyptic number.

131344450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131344450 is a deficient number, since it is larger than the sum of its proper divisors (119562482).

131344450 is a wasteful number, since it uses less digits than its factorization.

131344450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71046 (or 71041 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 131344450 is about 11460.5606320110. The cubic root of 131344450 is about 508.3200522076.

Adding to 131344450 its reverse (54443131), we get a palindrome (185787581).

The spelling of 131344450 in words is "one hundred thirty-one million, three hundred forty-four thousand, four hundred fifty".