16130731 has 4 divisors (see below), whose sum is σ = 16144264. Its totient is φ = 16117200.

The previous prime is 16130713. The next prime is 16130743. The reversal of 16130731 is 13703161.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13703161 = 19 ⋅721219.

It is a cyclic number.

It is not a de Polignac number, because 16130731 - 2¹³ = 16122539 is a prime.

It is a super-2 number, since 2×16130731² = 520400965188722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16130761) 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 3 ways as a sum of consecutive naturals, for example, 4785 + ... + 7426.

It is an arithmetic number, because the mean of its divisors is an integer number (4036066).

Almost surely, 2^16130731 is an apocalyptic number.

16130731 is a deficient number, since it is larger than the sum of its proper divisors (13533).

16130731 is a wasteful number, since it uses less digits than its factorization.

16130731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13532.

The product of its (nonzero) digits is 378, while the sum is 22.

The square root of 16130731 is about 4016.3081306095. The cubic root of 16130731 is about 252.6686439959.

Adding to 16130731 its reverse (13703161), we get a palindrome (29833892).

It can be divided in two parts, 16130 and 731, that added together give a palindrome (16861).

The spelling of 16130731 in words is "sixteen million, one hundred thirty thousand, seven hundred thirty-one".