16431101 has 2 divisors, whose sum is σ = 16431102. Its totient is φ = 16431100.

The previous prime is 16431097. The next prime is 16431127. The reversal of 16431101 is 10113461.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10176100 + 6255001 = 3190^2 + 2501^2 .

It is an emirp because it is prime and its reverse (10113461) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16431101 - 2² = 16431097 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16431101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16431161) 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 as a sum of consecutive naturals, namely, 8215550 + 8215551.

It is an arithmetic number, because the mean of its divisors is an integer number (8215551).

Almost surely, 2^16431101 is an apocalyptic number.

It is an amenable number.

16431101 is a deficient number, since it is larger than the sum of its proper divisors (1).

16431101 is an equidigital number, since it uses as much as digits as its factorization.

16431101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 16431101 is about 4053.5294497512. The cubic root of 16431101 is about 254.2273214493.

Adding to 16431101 its reverse (10113461), we get a palindrome (26544562).

It can be divided in two parts, 1643 and 1101, that added together give a cube (2744 = 14³).

The spelling of 16431101 in words is "sixteen million, four hundred thirty-one thousand, one hundred one".