131004438 has 16 divisors (see below), whose sum is σ = 262158336. Its totient is φ = 43643240.

The previous prime is 131004427. The next prime is 131004439. The reversal of 131004438 is 834400131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131004439) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7495 + ... + 17837.

It is an arithmetic number, because the mean of its divisors is an integer number (16384896).

Almost surely, 2^131004438 is an apocalyptic number.

131004438 is an abundant number, since it is smaller than the sum of its proper divisors (131153898).

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

131004438 is a wasteful number, since it uses less digits than its factorization.

131004438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12459.

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 131004438 is about 11445.7170155478. The cubic root of 131004438 is about 507.8810429918.

Adding to 131004438 its reverse (834400131), we get a palindrome (965404569).

The spelling of 131004438 in words is "one hundred thirty-one million, four thousand, four hundred thirty-eight".