3172823 has 2 divisors, whose sum is σ = 3172824. Its totient is φ = 3172822.

The previous prime is 3172817. The next prime is 3172831. The reversal of 3172823 is 3282713.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3172823 - 2⁸ = 3172567 is a prime.

It is equal to p₂₂₈₃₈₃ and since 3172823 and 228383 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 3172792 and 3172801.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3172123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1586411 + 1586412.

It is an arithmetic number, because the mean of its divisors is an integer number (1586412).

Almost surely, 2^3172823 is an apocalyptic number.

3172823 is a deficient number, since it is larger than the sum of its proper divisors (1).

3172823 is an equidigital number, since it uses as much as digits as its factorization.

3172823 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2016, while the sum is 26.

The square root of 3172823 is about 1781.2419824381. The cubic root of 3172823 is about 146.9429028412.

The spelling of 3172823 in words is "three million, one hundred seventy-two thousand, eight hundred twenty-three".