101131999 has 8 divisors (see below), whose sum is σ = 101930400. Its totient is φ = 100336896.

The previous prime is 101131993. The next prime is 101132033. The reversal of 101131999 is 999131101.

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

It is a cyclic number.

It is not a de Polignac number, because 101131999 - 2⁵ = 101131967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101131993) 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, 117579 + ... + 118435.

It is an arithmetic number, because the mean of its divisors is an integer number (12741300).

Almost surely, 2^101131999 is an apocalyptic number.

101131999 is a deficient number, since it is larger than the sum of its proper divisors (798401).

101131999 is an equidigital number, since it uses as much as digits as its factorization.

101131999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1649.

The product of its (nonzero) digits is 2187, while the sum is 34.

The square root of 101131999 is about 10056.4406725243. The cubic root of 101131999 is about 465.9037405478.

The spelling of 101131999 in words is "one hundred one million, one hundred thirty-one thousand, nine hundred ninety-nine".