101681013 has 16 divisors (see below), whose sum is σ = 157570560. Its totient is φ = 57117936.

The previous prime is 101681011. The next prime is 101681057. The reversal of 101681013 is 310186101.

It is not a de Polignac number, because 101681013 - 2¹ = 101681011 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101681011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39795 + ... + 42272.

It is an arithmetic number, because the mean of its divisors is an integer number (9848160).

Almost surely, 2^101681013 is an apocalyptic number.

It is an amenable number.

101681013 is a deficient number, since it is larger than the sum of its proper divisors (55889547).

101681013 is an equidigital number, since it uses as much as digits as its factorization.

101681013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82136.

The product of its (nonzero) digits is 144, while the sum is 21.

The square root of 101681013 is about 10083.7003624662. The cubic root of 101681013 is about 466.7453014316.

The spelling of 101681013 in words is "one hundred one million, six hundred eighty-one thousand, thirteen".