131201445 has 16 divisors (see below), whose sum is σ = 215596800. Its totient is φ = 68082624.

The previous prime is 131201443. The next prime is 131201489. The reversal of 131201445 is 544102131.

It is not a de Polignac number, because 131201445 - 2¹ = 131201443 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131201443) 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 15 ways as a sum of consecutive naturals, for example, 117645 + ... + 118754.

It is an arithmetic number, because the mean of its divisors is an integer number (13474800).

Almost surely, 2^131201445 is an apocalyptic number.

131201445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

131201445 is a deficient number, since it is larger than the sum of its proper divisors (84395355).

131201445 is a wasteful number, since it uses less digits than its factorization.

131201445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236444.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 131201445 is about 11454.3199274335. The cubic root of 131201445 is about 508.1355025826.

Adding to 131201445 its reverse (544102131), we get a palindrome (675303576).

The spelling of 131201445 in words is "one hundred thirty-one million, two hundred one thousand, four hundred forty-five".