16145231 has 8 divisors (see below), whose sum is σ = 17316720. Its totient is φ = 15005952.

The previous prime is 16145221. The next prime is 16145251. The reversal of 16145231 is 13254161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16145231 is a prime.

It is a super-2 number, since 2×16145231² = 521336968086722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16145197 and 16145206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16145201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7010 + ... + 9023.

It is an arithmetic number, because the mean of its divisors is an integer number (2164590).

Almost surely, 2^16145231 is an apocalyptic number.

16145231 is a deficient number, since it is larger than the sum of its proper divisors (1171489).

16145231 is a wasteful number, since it uses less digits than its factorization.

16145231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16105.

The product of its digits is 720, while the sum is 23.

The square root of 16145231 is about 4018.1128655129. The cubic root of 16145231 is about 252.7443297189.

Adding to 16145231 its reverse (13254161), we get a palindrome (29399392).

The spelling of 16145231 in words is "sixteen million, one hundred forty-five thousand, two hundred thirty-one".