101680919 has 4 divisors (see below), whose sum is σ = 101953896. Its totient is φ = 101407944.

The previous prime is 101680889. The next prime is 101680933. The reversal of 101680919 is 919086101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 919086101 = 67 ⋅13717703.

It is a cyclic number.

It is not a de Polignac number, because 101680919 - 2¹² = 101676823 is a prime.

It is a super-2 number, since 2×101680919² = 20678018577369122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101680949) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135929 + ... + 136674.

It is an arithmetic number, because the mean of its divisors is an integer number (25488474).

Almost surely, 2^101680919 is an apocalyptic number.

101680919 is a deficient number, since it is larger than the sum of its proper divisors (272977).

101680919 is an equidigital number, since it uses as much as digits as its factorization.

101680919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272976.

The product of its (nonzero) digits is 3888, while the sum is 35.

The square root of 101680919 is about 10083.6957014777. The cubic root of 101680919 is about 466.7451576025.

The spelling of 101680919 in words is "one hundred one million, six hundred eighty thousand, nine hundred nineteen".