281828101 has 2 divisors, whose sum is σ = 281828102. Its totient is φ = 281828100.

The previous prime is 281828089. The next prime is 281828117. The reversal of 281828101 is 101828182.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 280596001 + 1232100 = 16751^2 + 1110^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-281828101 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (281828171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140914050 + 140914051.

It is an arithmetic number, because the mean of its divisors is an integer number (140914051).

Almost surely, 2^281828101 is an apocalyptic number.

It is an amenable number.

281828101 is a deficient number, since it is larger than the sum of its proper divisors (1).

281828101 is an equidigital number, since it uses as much as digits as its factorization.

281828101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2048, while the sum is 31.

The square root of 281828101 is about 16787.7366252869. The cubic root of 281828101 is about 655.6339459909.

The spelling of 281828101 in words is "two hundred eighty-one million, eight hundred twenty-eight thousand, one hundred one".