863144101 has 2 divisors, whose sum is σ = 863144102. Its totient is φ = 863144100.

The previous prime is 863144063. The next prime is 863144147. The reversal of 863144101 is 101441368.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 852581601 + 10562500 = 29199^2 + 3250^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-863144101 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 863144101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (863144201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 431572050 + 431572051.

It is an arithmetic number, because the mean of its divisors is an integer number (431572051).

Almost surely, 2^863144101 is an apocalyptic number.

It is an amenable number.

863144101 is a deficient number, since it is larger than the sum of its proper divisors (1).

863144101 is an equidigital number, since it uses as much as digits as its factorization.

863144101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 863144101 is about 29379.3141683056. The cubic root of 863144101 is about 952.1260238062.

Adding to 863144101 its reverse (101441368), we get a palindrome (964585469).

The spelling of 863144101 in words is "eight hundred sixty-three million, one hundred forty-four thousand, one hundred one".