131216752 has 20 divisors (see below), whose sum is σ = 254499336. Its totient is φ = 65539520.

The previous prime is 131216741. The next prime is 131216759. The reversal of 131216752 is 257612131.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 131216752.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131216759) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13698 + ... + 21214.

Almost surely, 2^131216752 is an apocalyptic number.

It is an amenable number.

131216752 is a deficient number, since it is larger than the sum of its proper divisors (123282584).

131216752 is a wasteful number, since it uses less digits than its factorization.

131216752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8616 (or 8610 counting only the distinct ones).

The product of its digits is 2520, while the sum is 28.

The square root of 131216752 is about 11454.9880838000. The cubic root of 131216752 is about 508.1552628519.

Adding to 131216752 its reverse (257612131), we get a palindrome (388828883).

The spelling of 131216752 in words is "one hundred thirty-one million, two hundred sixteen thousand, seven hundred fifty-two".