131530004 has 6 divisors (see below), whose sum is σ = 230177514. Its totient is φ = 65765000.

The previous prime is 131529961. The next prime is 131530019. The reversal of 131530004 is 400035131.

It can be written as a sum of positive squares in only one way, i.e., 117765904 + 13764100 = 10852^2 + 3710^2 .

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 16441247 + ... + 16441254.

It is an arithmetic number, because the mean of its divisors is an integer number (38362919).

Almost surely, 2^131530004 is an apocalyptic number.

It is an amenable number.

131530004 is a deficient number, since it is larger than the sum of its proper divisors (98647510).

131530004 is a wasteful number, since it uses less digits than its factorization.

131530004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32882505 (or 32882503 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 131530004 is about 11468.6531031329. The cubic root of 131530004 is about 508.5593122530.

Adding to 131530004 its reverse (400035131), we get a palindrome (531565135).

The spelling of 131530004 in words is "one hundred thirty-one million, five hundred thirty thousand, four".