131443504 has 20 divisors (see below), whose sum is σ = 258990120. Its totient is φ = 64607360.

The previous prime is 131443469. The next prime is 131443513. The reversal of 131443504 is 405344131.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68677 + ... + 70564.

It is an arithmetic number, because the mean of its divisors is an integer number (12949506).

Almost surely, 2^131443504 is an apocalyptic number.

It is an amenable number.

131443504 is a deficient number, since it is larger than the sum of its proper divisors (127546616).

131443504 is a wasteful number, since it uses less digits than its factorization.

131443504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139308 (or 139302 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 131443504 is about 11464.8813338822. The cubic root of 131443504 is about 508.4478040394.

Adding to 131443504 its reverse (405344131), we get a palindrome (536787635).

The spelling of 131443504 in words is "one hundred thirty-one million, four hundred forty-three thousand, five hundred four".