131355210 has 64 divisors (see below), whose sum is σ = 372729600. Its totient is φ = 28987392.

The previous prime is 131355199. The next prime is 131355223. The reversal of 131355210 is 12553131.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4695 + ... + 16874.

It is an arithmetic number, because the mean of its divisors is an integer number (5823900).

Almost surely, 2^131355210 is an apocalyptic number.

131355210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131355210 is an abundant number, since it is smaller than the sum of its proper divisors (241374390).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131355210 is a wasteful number, since it uses less digits than its factorization.

131355210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21615.

The product of its (nonzero) digits is 450, while the sum is 21.

The square root of 131355210 is about 11461.0300584197. The cubic root of 131355210 is about 508.3339326936. Note that the first 3 decimals are identical.

The spelling of 131355210 in words is "one hundred thirty-one million, three hundred fifty-five thousand, two hundred ten".