131287004 has 12 divisors (see below), whose sum is σ = 229845000. Its totient is φ = 65617008.

The previous prime is 131286997. The next prime is 131287007. The reversal of 131287004 is 400782131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131287007) by changing a digit.

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, 8222 + ... + 18170.

It is an arithmetic number, because the mean of its divisors is an integer number (19153750).

Almost surely, 2^131287004 is an apocalyptic number.

It is an amenable number.

131287004 is a deficient number, since it is larger than the sum of its proper divisors (98557996).

131287004 is a wasteful number, since it uses less digits than its factorization.

131287004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13252 (or 13250 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 131287004 is about 11458.0541105373. The cubic root of 131287004 is about 508.2459335779.

The spelling of 131287004 in words is "one hundred thirty-one million, two hundred eighty-seven thousand, four".