131000442 has 16 divisors (see below), whose sum is σ = 262215360. Its totient is φ = 43631072.

The previous prime is 131000437. The next prime is 131000491. The reversal of 131000442 is 244000131.

It is a super-2 number, since 2×131000442² = 34322231608390728, which contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 363 + ... + 16190.

It is an arithmetic number, because the mean of its divisors is an integer number (16388460).

Almost surely, 2^131000442 is an apocalyptic number.

131000442 is an abundant number, since it is smaller than the sum of its proper divisors (131214918).

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

131000442 is a wasteful number, since it uses less digits than its factorization.

131000442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17877.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 131000442 is about 11445.5424511030. The cubic root of 131000442 is about 507.8758790108.

Adding to 131000442 its reverse (244000131), we get a palindrome (375000573).

The spelling of 131000442 in words is "one hundred thirty-one million, four hundred forty-two", and thus it is an aban number.