131003304433 has 4 divisors (see below), whose sum is σ = 133475064948. Its totient is φ = 128531543920.

The previous prime is 131003304379. The next prime is 131003304451. The reversal of 131003304433 is 334403300131.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 46977528049 + 84025776384 = 216743^2 + 289872^2 .

It is a cyclic number.

It is not a de Polignac number, because 131003304433 - 2¹³ = 131003296241 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131003304398 and 131003304407.

It is not an unprimeable number, because it can be changed into a prime (131003304463) 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, 1235880178 + ... + 1235880283.

It is an arithmetic number, because the mean of its divisors is an integer number (33368766237).

Almost surely, 2^131003304433 is an apocalyptic number.

It is an amenable number.

131003304433 is a deficient number, since it is larger than the sum of its proper divisors (2471760515).

131003304433 is an equidigital number, since it uses as much as digits as its factorization.

131003304433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2471760514.

The product of its (nonzero) digits is 3888, while the sum is 25.

Adding to 131003304433 its reverse (334403300131), we get a palindrome (465406604564).

The spelling of 131003304433 in words is "one hundred thirty-one billion, three million, three hundred four thousand, four hundred thirty-three".