16131500 has 96 divisors (see below), whose sum is σ = 44029440. Its totient is φ = 5016000.

The previous prime is 16131499. The next prime is 16131503. The reversal of 16131500 is 513161.

It is not an unprimeable number, because it can be changed into a prime (16131503) by changing a digit.

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 in 31 ways as a sum of consecutive naturals, for example, 38291 + ... + 38709.

It is an arithmetic number, because the mean of its divisors is an integer number (458640).

Almost surely, 2^16131500 is an apocalyptic number.

16131500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16131500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22014720).

16131500 is an abundant number, since it is smaller than the sum of its proper divisors (27897940).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16131500 is a wasteful number, since it uses less digits than its factorization.

16131500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 456 (or 444 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 17.

The square root of 16131500 is about 4016.4038641551. The cubic root of 16131500 is about 252.6726590878.

Adding to 16131500 its reverse (513161), we get a palindrome (16644661).

It can be divided in two parts, 1613 and 1500, that added together give a palindrome (3113).

The spelling of 16131500 in words is "sixteen million, one hundred thirty-one thousand, five hundred".