2172360923 has 2 divisors, whose sum is σ = 2172360924. Its totient is φ = 2172360922.

The previous prime is 2172360907. The next prime is 2172360977. The reversal of 2172360923 is 3290632712.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2172360923 - 2⁴ = 2172360907 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (2172360023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1086180461 + 1086180462.

It is an arithmetic number, because the mean of its divisors is an integer number (1086180462).

Almost surely, 2^2172360923 is an apocalyptic number.

2172360923 is a deficient number, since it is larger than the sum of its proper divisors (1).

2172360923 is an equidigital number, since it uses as much as digits as its factorization.

2172360923 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216, while the sum is 35.

The square root of 2172360923 is about 46608.5928021862. The cubic root of 2172360923 is about 1295.1219401878.

The spelling of 2172360923 in words is "two billion, one hundred seventy-two million, three hundred sixty thousand, nine hundred twenty-three".