16312111 has 2 divisors, whose sum is σ = 16312112. Its totient is φ = 16312110.

The previous prime is 16312081. The next prime is 16312117. The reversal of 16312111 is 11121361.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16312111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16312117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8156055 + 8156056.

It is an arithmetic number, because the mean of its divisors is an integer number (8156056).

Almost surely, 2^16312111 is an apocalyptic number.

16312111 is a deficient number, since it is larger than the sum of its proper divisors (1).

16312111 is an equidigital number, since it uses as much as digits as its factorization.

16312111 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36, while the sum is 16.

The square root of 16312111 is about 4038.8254480727. The cubic root of 16312111 is about 253.6121501259.

Adding to 16312111 its reverse (11121361), we get a palindrome (27433472).

The spelling of 16312111 in words is "sixteen million, three hundred twelve thousand, one hundred eleven".