101772813 has 8 divisors (see below), whose sum is σ = 138584448. Its totient is φ = 66404864.

The previous prime is 101772793. The next prime is 101772821. The reversal of 101772813 is 318277101.

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 101772813 - 2¹⁴ = 101756429 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101772823) 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, 360756 + ... + 361037.

It is an arithmetic number, because the mean of its divisors is an integer number (17323056).

Almost surely, 2^101772813 is an apocalyptic number.

It is an amenable number.

101772813 is a deficient number, since it is larger than the sum of its proper divisors (36811635).

101772813 is an equidigital number, since it uses as much as digits as its factorization.

101772813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 721843.

The product of its (nonzero) digits is 2352, while the sum is 30.

The square root of 101772813 is about 10088.2512359675. The cubic root of 101772813 is about 466.8857220450.

The spelling of 101772813 in words is "one hundred one million, seven hundred seventy-two thousand, eight hundred thirteen".