131203612 has 6 divisors (see below), whose sum is σ = 229606328. Its totient is φ = 65601804.

The previous prime is 131203577. The next prime is 131203613. The reversal of 131203612 is 216302131.

It is a self number, because there is not a number n which added to its sum of digits gives 131203612.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131203613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16400448 + ... + 16400455.

Almost surely, 2^131203612 is an apocalyptic number.

It is an amenable number.

131203612 is a deficient number, since it is larger than the sum of its proper divisors (98402716).

131203612 is a wasteful number, since it uses less digits than its factorization.

131203612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32800907 (or 32800905 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 131203612 is about 11454.4145201752. The cubic root of 131203612 is about 508.1383001218.

Adding to 131203612 its reverse (216302131), we get a palindrome (347505743).

The spelling of 131203612 in words is "one hundred thirty-one million, two hundred three thousand, six hundred twelve".