131563445 has 32 divisors (see below), whose sum is σ = 176047872. Its totient is φ = 93768192.

The previous prime is 131563433. The next prime is 131563463. The reversal of 131563445 is 544365131.

It is a cyclic number.

It is not a de Polignac number, because 131563445 - 2⁸ = 131563189 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 287657 + ... + 288113.

It is an arithmetic number, because the mean of its divisors is an integer number (5501496).

Almost surely, 2^131563445 is an apocalyptic number.

It is an amenable number.

131563445 is a deficient number, since it is larger than the sum of its proper divisors (44484427).

131563445 is a wasteful number, since it uses less digits than its factorization.

131563445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 621.

The product of its digits is 21600, while the sum is 32.

The square root of 131563445 is about 11470.1109410502. The cubic root of 131563445 is about 508.6024083537.

The spelling of 131563445 in words is "one hundred thirty-one million, five hundred sixty-three thousand, four hundred forty-five".