131602004 has 12 divisors (see below), whose sum is σ = 231268800. Its totient is φ = 65525208.

The previous prime is 131601989. The next prime is 131602027. The reversal of 131602004 is 400206131.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67874 + ... + 69785.

It is an arithmetic number, because the mean of its divisors is an integer number (19272400).

Almost surely, 2^131602004 is an apocalyptic number.

It is an amenable number.

131602004 is a deficient number, since it is larger than the sum of its proper divisors (99666796).

131602004 is a wasteful number, since it uses less digits than its factorization.

131602004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137902 (or 137900 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 131602004 is about 11471.7916647749. The cubic root of 131602004 is about 508.6520910617.

Adding to 131602004 its reverse (400206131), we get a palindrome (531808135).

The spelling of 131602004 in words is "one hundred thirty-one million, six hundred two thousand, four".