16161311 has 2 divisors, whose sum is σ = 16161312. Its totient is φ = 16161310.

The previous prime is 16161283. The next prime is 16161319. The reversal of 16161311 is 11316161.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16161311 is a prime.

It is a super-2 number, since 2×16161311² = 522375946477442, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16161319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8080655 + 8080656.

It is an arithmetic number, because the mean of its divisors is an integer number (8080656).

Almost surely, 2^16161311 is an apocalyptic number.

16161311 is a deficient number, since it is larger than the sum of its proper divisors (1).

16161311 is an equidigital number, since it uses as much as digits as its factorization.

16161311 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108, while the sum is 20.

The square root of 16161311 is about 4020.1133068609. The cubic root of 16161311 is about 252.8282096034.

Adding to 16161311 its reverse (11316161), we get a palindrome (27477472).

The spelling of 16161311 in words is "sixteen million, one hundred sixty-one thousand, three hundred eleven".