2173423951 has 2 divisors, whose sum is σ = 2173423952. Its totient is φ = 2173423950.

The previous prime is 2173423943. The next prime is 2173423969. The reversal of 2173423951 is 1593243712.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2173423951 - 2³ = 2173423943 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2173423951.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2173423991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1086711975 + 1086711976.

It is an arithmetic number, because the mean of its divisors is an integer number (1086711976).

Almost surely, 2^2173423951 is an apocalyptic number.

2173423951 is a deficient number, since it is larger than the sum of its proper divisors (1).

2173423951 is an equidigital number, since it uses as much as digits as its factorization.

2173423951 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 45360, while the sum is 37.

The square root of 2173423951 is about 46619.9951844699. The cubic root of 2173423951 is about 1295.3331583706. Note that the first 3 decimals are identical.

The spelling of 2173423951 in words is "two billion, one hundred seventy-three million, four hundred twenty-three thousand, nine hundred fifty-one".