131555434 has 16 divisors (see below), whose sum is σ = 201553920. Its totient is φ = 64377040.

The previous prime is 131555383. The next prime is 131555443. The reversal of 131555434 is 434555131.

It is a junction number, because it is equal to n+sod(n) for n = 131555396 and 131555405.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49479 + ... + 52069.

It is an arithmetic number, because the mean of its divisors is an integer number (12597120).

Almost surely, 2^131555434 is an apocalyptic number.

131555434 is a deficient number, since it is larger than the sum of its proper divisors (69998486).

131555434 is a wasteful number, since it uses less digits than its factorization.

131555434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3125.

The product of its digits is 18000, while the sum is 31.

The square root of 131555434 is about 11469.7617237674. The cubic root of 131555434 is about 508.5920850794.

The spelling of 131555434 in words is "one hundred thirty-one million, five hundred fifty-five thousand, four hundred thirty-four".