131423142 has 8 divisors (see below), whose sum is σ = 262846296. Its totient is φ = 43807712.

The previous prime is 131423137. The next prime is 131423161. The reversal of 131423142 is 241324131.

It is a sphenic number, since it is the product of 3 distinct primes.

131423142 is an admirable number.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 10951923 + ... + 10951934.

It is an arithmetic number, because the mean of its divisors is an integer number (32855787).

Almost surely, 2^131423142 is an apocalyptic number.

131423142 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

131423142 is a wasteful number, since it uses less digits than its factorization.

131423142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21903862.

The product of its digits is 576, while the sum is 21.

The square root of 131423142 is about 11463.9932833197. The cubic root of 131423142 is about 508.4215480218.

Adding to 131423142 its reverse (241324131), we get a palindrome (372747273).

The spelling of 131423142 in words is "one hundred thirty-one million, four hundred twenty-three thousand, one hundred forty-two".