131432045 has 4 divisors (see below), whose sum is σ = 157718460. Its totient is φ = 105145632.

The previous prime is 131432027. The next prime is 131432087. The reversal of 131432045 is 540234131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 540234131 = 4027 ⋅134153.

It can be written as a sum of positive squares in 2 ways, for example, as 24661156 + 106770889 = 4966^2 + 10333^2 .

It is a cyclic number.

It is not a de Polignac number, because 131432045 - 2⁸ = 131431789 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 131432045.

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 3 ways as a sum of consecutive naturals, for example, 13143200 + ... + 13143209.

It is an arithmetic number, because the mean of its divisors is an integer number (39429615).

Almost surely, 2^131432045 is an apocalyptic number.

It is an amenable number.

131432045 is a deficient number, since it is larger than the sum of its proper divisors (26286415).

131432045 is an equidigital number, since it uses as much as digits as its factorization.

131432045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26286414.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 131432045 is about 11464.3815794835. The cubic root of 131432045 is about 508.4330284323.

Adding to 131432045 its reverse (540234131), we get a palindrome (671666176).

The spelling of 131432045 in words is "one hundred thirty-one million, four hundred thirty-two thousand, forty-five".