16612331 has 8 divisors (see below), whose sum is σ = 17230800. Its totient is φ = 15996960.

The previous prime is 16612261. The next prime is 16612333. The reversal of 16612331 is 13321661.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 16612331 - 2¹⁰ = 16611307 is a prime.

It is a super-2 number, since 2×16612331² = 551939082507122, 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 = 16612297 and 16612306.

It is not an unprimeable number, because it can be changed into a prime (16612333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19625 + ... + 20453.

It is an arithmetic number, because the mean of its divisors is an integer number (2153850).

Almost surely, 2^16612331 is an apocalyptic number.

16612331 is a deficient number, since it is larger than the sum of its proper divisors (618469).

16612331 is an equidigital number, since it uses as much as digits as its factorization.

16612331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1549.

The product of its digits is 648, while the sum is 23.

The square root of 16612331 is about 4075.8227390307. The cubic root of 16612331 is about 255.1585890344.

Adding to 16612331 its reverse (13321661), we get a palindrome (29933992).

The spelling of 16612331 in words is "sixteen million, six hundred twelve thousand, three hundred thirty-one".