161623327 has 4 divisors (see below), whose sum is σ = 163570680. Its totient is φ = 159675976.

The previous prime is 161623321. The next prime is 161623333. The reversal of 161623327 is 723326161.

161623327 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (161623321) and next prime (161623333).

It is a cyclic number.

It is not a de Polignac number, because 161623327 - 2¹¹ = 161621279 is a prime.

It is a super-2 number, since 2×161623327² = 52244199661097858, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161623321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 973552 + ... + 973717.

It is an arithmetic number, because the mean of its divisors is an integer number (40892670).

Almost surely, 2^161623327 is an apocalyptic number.

161623327 is a deficient number, since it is larger than the sum of its proper divisors (1947353).

161623327 is an equidigital number, since it uses as much as digits as its factorization.

161623327 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1947352.

The product of its digits is 9072, while the sum is 31.

The square root of 161623327 is about 12713.1163370749. The cubic root of 161623327 is about 544.7133436271.

Adding to 161623327 its reverse (723326161), we get a palindrome (884949488).

The spelling of 161623327 in words is "one hundred sixty-one million, six hundred twenty-three thousand, three hundred twenty-seven".