161212327 has 2 divisors, whose sum is σ = 161212328. Its totient is φ = 161212326.

The previous prime is 161212301. The next prime is 161212349. The reversal of 161212327 is 723212161.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 161212327 - 2¹¹ = 161210279 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161212357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80606163 + 80606164.

It is an arithmetic number, because the mean of its divisors is an integer number (80606164).

Almost surely, 2^161212327 is an apocalyptic number.

161212327 is a deficient number, since it is larger than the sum of its proper divisors (1).

161212327 is an equidigital number, since it uses as much as digits as its factorization.

161212327 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1008, while the sum is 25.

The square root of 161212327 is about 12696.9416396233. The cubic root of 161212327 is about 544.2512254696.

Adding to 161212327 its reverse (723212161), we get a palindrome (884424488).

The spelling of 161212327 in words is "one hundred sixty-one million, two hundred twelve thousand, three hundred twenty-seven".