2180723 has 2 divisors, whose sum is σ = 2180724. Its totient is φ = 2180722.

The previous prime is 2180719. The next prime is 2180741. The reversal of 2180723 is 3270812.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2180723 - 2² = 2180719 is a prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (2180923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1090361 + 1090362.

It is an arithmetic number, because the mean of its divisors is an integer number (1090362).

2^2180723 is an apocalyptic number.

2180723 is a deficient number, since it is larger than the sum of its proper divisors (1).

2180723 is an equidigital number, since it uses as much as digits as its factorization.

2180723 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 2180723 is about 1476.7271244208. The cubic root of 2180723 is about 129.6781585084.

The spelling of 2180723 in words is "two million, one hundred eighty thousand, seven hundred twenty-three".