131613628 has 24 divisors (see below), whose sum is σ = 235781280. Its totient is φ = 64259520.

The previous prime is 131613619. The next prime is 131613673. The reversal of 131613628 is 826316131.

It is a self number, because there is not a number n which added to its sum of digits gives 131613628.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47193 + ... + 49903.

It is an arithmetic number, because the mean of its divisors is an integer number (9824220).

Almost surely, 2^131613628 is an apocalyptic number.

It is an amenable number.

131613628 is a deficient number, since it is larger than the sum of its proper divisors (104167652).

131613628 is a wasteful number, since it uses less digits than its factorization.

131613628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2997 (or 2995 counting only the distinct ones).

The product of its digits is 5184, while the sum is 31.

The square root of 131613628 is about 11472.2982876144. The cubic root of 131613628 is about 508.6670665121.

Adding to 131613628 its reverse (826316131), we get a palindrome (957929759).

The spelling of 131613628 in words is "one hundred thirty-one million, six hundred thirteen thousand, six hundred twenty-eight".