131406555 has 32 divisors (see below), whose sum is σ = 242684928. Its totient is φ = 59472000.

The previous prime is 131406547. The next prime is 131406563. The reversal of 131406555 is 555604131.

It is an interprime number because it is at equal distance from previous prime (131406547) and next prime (131406563).

It is not a de Polignac number, because 131406555 - 2³ = 131406547 is a prime.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 4410 + ... + 16800.

It is an arithmetic number, because the mean of its divisors is an integer number (7583904).

Almost surely, 2^131406555 is an apocalyptic number.

131406555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

131406555 is a deficient number, since it is larger than the sum of its proper divisors (111278373).

131406555 is a wasteful number, since it uses less digits than its factorization.

131406555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12507.

The product of its (nonzero) digits is 9000, while the sum is 30.

The square root of 131406555 is about 11463.2698214776. The cubic root of 131406555 is about 508.4001577175.

The spelling of 131406555 in words is "one hundred thirty-one million, four hundred six thousand, five hundred fifty-five".