131438004 has 24 divisors (see below), whose sum is σ = 306921888. Its totient is φ = 43779360.

The previous prime is 131438003. The next prime is 131438009. The reversal of 131438004 is 400834131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131438003) 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, 16299 + ... + 22989.

It is an arithmetic number, because the mean of its divisors is an integer number (12788412).

Almost surely, 2^131438004 is an apocalyptic number.

It is an amenable number.

131438004 is an abundant number, since it is smaller than the sum of its proper divisors (175483884).

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

131438004 is a wasteful number, since it uses less digits than its factorization.

131438004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8335 (or 8333 counting only the distinct ones).

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

The square root of 131438004 is about 11464.6414684455. The cubic root of 131438004 is about 508.4407122677.

The spelling of 131438004 in words is "one hundred thirty-one million, four hundred thirty-eight thousand, four".