131872605 has 32 divisors (see below), whose sum is σ = 223147008. Its totient is φ = 66393600.

The previous prime is 131872603. The next prime is 131872607. The reversal of 131872605 is 506278131.

It is an interprime number because it is at equal distance from previous prime (131872603) and next prime (131872607).

It is not a de Polignac number, because 131872605 - 2¹ = 131872603 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131872603) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15607 + ... + 22523.

It is an arithmetic number, because the mean of its divisors is an integer number (6973344).

Almost surely, 2^131872605 is an apocalyptic number.

131872605 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

131872605 is a deficient number, since it is larger than the sum of its proper divisors (91274403).

131872605 is a wasteful number, since it uses less digits than its factorization.

131872605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6997.

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 131872605 is about 11483.5797990000. The cubic root of 131872605 is about 509.0004837607. Note that the first 3 decimals are identical.

The spelling of 131872605 in words is "one hundred thirty-one million, eight hundred seventy-two thousand, six hundred five".