101172315 has 16 divisors (see below), whose sum is σ = 164620800. Its totient is φ = 53043552.

The previous prime is 101172299. The next prime is 101172317. The reversal of 101172315 is 513271101.

It is a happy number.

It is not a de Polignac number, because 101172315 - 2⁴ = 101172299 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 101172291 and 101172300.

It is not an unprimeable number, because it can be changed into a prime (101172317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56275 + ... + 58044.

It is an arithmetic number, because the mean of its divisors is an integer number (10288800).

Almost surely, 2^101172315 is an apocalyptic number.

101172315 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

101172315 is a deficient number, since it is larger than the sum of its proper divisors (63448485).

101172315 is a wasteful number, since it uses less digits than its factorization.

101172315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114386.

The product of its (nonzero) digits is 210, while the sum is 21.

The square root of 101172315 is about 10058.4449593364. Note that the first 3 decimals coincide. The cubic root of 101172315 is about 465.9656427481.

The spelling of 101172315 in words is "one hundred one million, one hundred seventy-two thousand, three hundred fifteen".