131315045 has 8 divisors (see below), whose sum is σ = 163011960. Its totient is φ = 101429440.

The previous prime is 131315033. The next prime is 131315053. The reversal of 131315045 is 540513131.

It can be written as a sum of positive squares in 4 ways, for example, as 24275329 + 107039716 = 4927^2 + 10346^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 131315045 - 2⁴ = 131315029 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 131315045.

It is a congruent number.

It is an unprimeable number.

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, 452666 + ... + 452955.

It is an arithmetic number, because the mean of its divisors is an integer number (20376495).

Almost surely, 2^131315045 is an apocalyptic number.

It is an amenable number.

131315045 is a deficient number, since it is larger than the sum of its proper divisors (31696915).

131315045 is an equidigital number, since it uses as much as digits as its factorization.

131315045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 905655.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 131315045 is about 11459.2776822974. The cubic root of 131315045 is about 508.2821156555.

Adding to 131315045 its reverse (540513131), we get a palindrome (671828176).

The spelling of 131315045 in words is "one hundred thirty-one million, three hundred fifteen thousand, forty-five".