101388091 has 8 divisors (see below), whose sum is σ = 116088320. Its totient is φ = 86741928.

The previous prime is 101388061. The next prime is 101388097. The reversal of 101388091 is 190883101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 101388091 - 2⁵ = 101388059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101388097) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9411 + ... + 17068.

It is an arithmetic number, because the mean of its divisors is an integer number (14511040).

Almost surely, 2^101388091 is an apocalyptic number.

101388091 is a deficient number, since it is larger than the sum of its proper divisors (14700229).

101388091 is an equidigital number, since it uses as much as digits as its factorization.

101388091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27033.

The product of its (nonzero) digits is 1728, while the sum is 31.

The square root of 101388091 is about 10069.1653576650. The cubic root of 101388091 is about 466.2966714104.

The spelling of 101388091 in words is "one hundred one million, three hundred eighty-eight thousand, ninety-one".