131423344 has 20 divisors (see below), whose sum is σ = 274220296. Its totient is φ = 60656832.

The previous prime is 131423333. The next prime is 131423377. The reversal of 131423344 is 443324131.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 315714 + ... + 316129.

Almost surely, 2^131423344 is an apocalyptic number.

It is an amenable number.

131423344 is an abundant number, since it is smaller than the sum of its proper divisors (142796952).

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

131423344 is a wasteful number, since it uses less digits than its factorization.

131423344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 631864 (or 631858 counting only the distinct ones).

The product of its digits is 3456, while the sum is 25.

The square root of 131423344 is about 11464.0020935099. The cubic root of 131423344 is about 508.4218085064.

Adding to 131423344 its reverse (443324131), we get a palindrome (574747475).

The spelling of 131423344 in words is "one hundred thirty-one million, four hundred twenty-three thousand, three hundred forty-four".