101693881 has 4 divisors (see below), whose sum is σ = 107675892. Its totient is φ = 95711872.

The previous prime is 101693863. The next prime is 101693887. The reversal of 101693881 is 188396101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 188396101 = 5407 ⋅34843.

It can be written as a sum of positive squares in 2 ways, for example, as 58660281 + 43033600 = 7659^2 + 6560^2 .

It is a cyclic number.

It is not a de Polignac number, because 101693881 - 2⁵ = 101693849 is a prime.

It is a super-2 number, since 2×101693881² = 20683290865684322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 101693881.

It is not an unprimeable number, because it can be changed into a prime (101693887) 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, 2990980 + ... + 2991013.

It is an arithmetic number, because the mean of its divisors is an integer number (26918973).

Almost surely, 2^101693881 is an apocalyptic number.

It is an amenable number.

101693881 is a deficient number, since it is larger than the sum of its proper divisors (5982011).

101693881 is an equidigital number, since it uses as much as digits as its factorization.

101693881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5982010.

The product of its (nonzero) digits is 10368, while the sum is 37.

The square root of 101693881 is about 10084.3384016999. The cubic root of 101693881 is about 466.7649898835.

The spelling of 101693881 in words is "one hundred one million, six hundred ninety-three thousand, eight hundred eighty-one".