172034023 has 4 divisors (see below), whose sum is σ = 196610320. Its totient is φ = 147457728.

The previous prime is 172034021. The next prime is 172034039. The reversal of 172034023 is 320430271.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 172034023 - 2¹ = 172034021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 172033985 and 172034003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172034021) 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 3 ways as a sum of consecutive naturals, for example, 12288138 + ... + 12288151.

It is an arithmetic number, because the mean of its divisors is an integer number (49152580).

Almost surely, 2^172034023 is an apocalyptic number.

172034023 is a deficient number, since it is larger than the sum of its proper divisors (24576297).

172034023 is an equidigital number, since it uses as much as digits as its factorization.

172034023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24576296.

The product of its (nonzero) digits is 1008, while the sum is 22.

The square root of 172034023 is about 13116.1740991800. The cubic root of 172034023 is about 556.1664432334.

Adding to 172034023 its reverse (320430271), we get a palindrome (492464294).

The spelling of 172034023 in words is "one hundred seventy-two million, thirty-four thousand, twenty-three".