131503870 has 16 divisors (see below), whose sum is σ = 239149008. Its totient is φ = 52058880.

The previous prime is 131503859. The next prime is 131503871. The reversal of 131503870 is 78305131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131503871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66816 + ... + 68755.

It is an arithmetic number, because the mean of its divisors is an integer number (14946813).

Almost surely, 2^131503870 is an apocalyptic number.

131503870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131503870 is a deficient number, since it is larger than the sum of its proper divisors (107645138).

131503870 is a wasteful number, since it uses less digits than its factorization.

131503870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135675.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 131503870 is about 11467.5136799570. The cubic root of 131503870 is about 508.5256277476.

It can be divided in two parts, 13150 and 3870, that added together give a triangular number (17020 = T₁₈₄).

The spelling of 131503870 in words is "one hundred thirty-one million, five hundred three thousand, eight hundred seventy".