131029504 has 20 divisors (see below), whose sum is σ = 261804114. Its totient is φ = 65514496.

The previous prime is 131029499. The next prime is 131029513. The reversal of 131029504 is 405920131.

131029504 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 93083904 + 37945600 = 9648^2 + 6160^2 .

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 as a sum of consecutive naturals, namely, 127447 + ... + 128470.

Almost surely, 2^131029504 is an apocalyptic number.

It is an amenable number.

131029504 is a deficient number, since it is larger than the sum of its proper divisors (130774610).

131029504 is an frugal number, since it uses more digits than its factorization.

131029504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255935 (or 255919 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 131029504 is about 11446.8119579209. The cubic root of 131029504 is about 507.9134330761.

Adding to 131029504 its reverse (405920131), we get a palindrome (536949635).

The spelling of 131029504 in words is "one hundred thirty-one million, twenty-nine thousand, five hundred four".