101217813 has 16 divisors (see below), whose sum is σ = 144913536. Its totient is φ = 62612480.

The previous prime is 101217793. The next prime is 101217841. The reversal of 101217813 is 318712101.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 101217813 - 2⁹ = 101217301 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101217013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10356 + ... + 17597.

It is an arithmetic number, because the mean of its divisors is an integer number (9057096).

Almost surely, 2^101217813 is an apocalyptic number.

It is an amenable number.

101217813 is a deficient number, since it is larger than the sum of its proper divisors (43695723).

101217813 is a wasteful number, since it uses less digits than its factorization.

101217813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28044.

The product of its (nonzero) digits is 336, while the sum is 24.

The square root of 101217813 is about 10060.7063867305. The cubic root of 101217813 is about 466.0354817734.

Adding to 101217813 its reverse (318712101), we get a palindrome (419929914).

The spelling of 101217813 in words is "one hundred one million, two hundred seventeen thousand, eight hundred thirteen".