16145631 has 12 divisors (see below), whose sum is σ = 24693552. Its totient is φ = 10130496.

The previous prime is 16145627. The next prime is 16145641. The reversal of 16145631 is 13654161.

16145631 is a `hidden beast` number, since 16 + 14 + 5 + 631 = 666.

It is not a de Polignac number, because 16145631 - 2² = 16145627 is a prime.

It is a super-2 number, since 2×16145631² = 521362800776322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16145595 and 16145604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16145641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 52611 + ... + 52916.

It is an arithmetic number, because the mean of its divisors is an integer number (2057796).

Almost surely, 2^16145631 is an apocalyptic number.

16145631 is a deficient number, since it is larger than the sum of its proper divisors (8547921).

16145631 is a wasteful number, since it uses less digits than its factorization.

16145631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105550 (or 105547 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 16145631 is about 4018.1626398144. The cubic root of 16145631 is about 252.7464169585.

Adding to 16145631 its reverse (13654161), we get a palindrome (29799792).

The spelling of 16145631 in words is "sixteen million, one hundred forty-five thousand, six hundred thirty-one".