70172323 has 4 divisors (see below), whose sum is σ = 75570208. Its totient is φ = 64774440.

The previous prime is 70172273. The next prime is 70172327. The reversal of 70172323 is 32327107.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32327107 = 419 ⋅77153.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70172323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70172327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2698923 + ... + 2698948.

It is an arithmetic number, because the mean of its divisors is an integer number (18892552).

Almost surely, 2^70172323 is an apocalyptic number.

70172323 is a deficient number, since it is larger than the sum of its proper divisors (5397885).

70172323 is a wasteful number, since it uses less digits than its factorization.

70172323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5397884.

The product of its (nonzero) digits is 1764, while the sum is 25.

The square root of 70172323 is about 8376.8922041530. The cubic root of 70172323 is about 412.4664396327.

The spelling of 70172323 in words is "seventy million, one hundred seventy-two thousand, three hundred twenty-three".