131442210 has 64 divisors (see below), whose sum is σ = 362620800. Its totient is φ = 33840576.

The previous prime is 131442197. The next prime is 131442253. The reversal of 131442210 is 12244131.

131442210 is a `hidden beast` number, since 13 + 1 + 442 + 210 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 564 + ... + 16223.

It is an arithmetic number, because the mean of its divisors is an integer number (5665950).

Almost surely, 2^131442210 is an apocalyptic number.

131442210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 131442210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (181310400).

131442210 is an abundant number, since it is smaller than the sum of its proper divisors (231178590).

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

131442210 is a wasteful number, since it uses less digits than its factorization.

131442210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16832 (or 16826 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 131442210 is about 11464.8249005382. The cubic root of 131442210 is about 508.4461355567.

Adding to 131442210 its reverse (12244131), we get a palindrome (143686341).

The spelling of 131442210 in words is "one hundred thirty-one million, four hundred forty-two thousand, two hundred ten".