131884845 has 8 divisors (see below), whose sum is σ = 211015776. Its totient is φ = 70338576.

The previous prime is 131884787. The next prime is 131884849. The reversal of 131884845 is 548488131.

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

It is not a de Polignac number, because 131884845 - 2¹⁴ = 131868461 is a prime.

It is a super-2 number, since 2×131884845² = 34787224681348050, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 131884797 and 131884806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131884849) 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 7 ways as a sum of consecutive naturals, for example, 4396147 + ... + 4396176.

It is an arithmetic number, because the mean of its divisors is an integer number (26376972).

Almost surely, 2^131884845 is an apocalyptic number.

131884845 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

131884845 is a deficient number, since it is larger than the sum of its proper divisors (79130931).

131884845 is an equidigital number, since it uses as much as digits as its factorization.

131884845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8792331.

The product of its digits is 122880, while the sum is 42.

The square root of 131884845 is about 11484.1127214949. The cubic root of 131884845 is about 509.0162312143.

It can be divided in two parts, 13188 and 4845, that multiplied together give a triangular number (63895860 = T₁₁₃₀₄).

The spelling of 131884845 in words is "one hundred thirty-one million, eight hundred eighty-four thousand, eight hundred forty-five".