172013303 has 8 divisors (see below), whose sum is σ = 214458240. Its totient is φ = 134036280.

The previous prime is 172013269. The next prime is 172013323. The reversal of 172013303 is 303310271.

It is a happy number.

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

It is not a de Polignac number, because 172013303 - 2¹⁰ = 172012279 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 (172013323) 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, 1116893 + ... + 1117046.

It is an arithmetic number, because the mean of its divisors is an integer number (26807280).

Almost surely, 2^172013303 is an apocalyptic number.

172013303 is a deficient number, since it is larger than the sum of its proper divisors (42444937).

172013303 is a wasteful number, since it uses less digits than its factorization.

172013303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2233957.

The product of its (nonzero) digits is 378, while the sum is 20.

The square root of 172013303 is about 13115.3842109181. The cubic root of 172013303 is about 556.1441138686.

Adding to 172013303 its reverse (303310271), we get a palindrome (475323574).

The spelling of 172013303 in words is "one hundred seventy-two million, thirteen thousand, three hundred three".