131382555 has 16 divisors (see below), whose sum is σ = 219352320. Its totient is φ = 67023968.

The previous prime is 131382551. The next prime is 131382583. The reversal of 131382555 is 555283131.

It is a cyclic number.

It is not a de Polignac number, because 131382555 - 2² = 131382551 is a prime.

It is a super-2 number, since 2×131382555² = 34522751516656050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (131382551) 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, 190065 + ... + 190754.

It is an arithmetic number, because the mean of its divisors is an integer number (13709520).

Almost surely, 2^131382555 is an apocalyptic number.

131382555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

131382555 is a deficient number, since it is larger than the sum of its proper divisors (87969765).

131382555 is a wasteful number, since it uses less digits than its factorization.

131382555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380850.

The product of its digits is 18000, while the sum is 33.

The square root of 131382555 is about 11462.2229519409. Note that the first 3 decimals coincide. The cubic root of 131382555 is about 508.3692045516.

The spelling of 131382555 in words is "one hundred thirty-one million, three hundred eighty-two thousand, five hundred fifty-five".