215473123 has 8 divisors (see below), whose sum is σ = 218471616. Its totient is φ = 212495400.

The previous prime is 215473117. The next prime is 215473127. The reversal of 215473123 is 321374512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 215473123 - 2¹⁷ = 215342051 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 215473091 and 215473100.

It is not an unprimeable number, because it can be changed into a prime (215473127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16308 + ... + 26398.

It is an arithmetic number, because the mean of its divisors is an integer number (27308952).

Almost surely, 2^215473123 is an apocalyptic number.

215473123 is a deficient number, since it is larger than the sum of its proper divisors (2998493).

215473123 is a wasteful number, since it uses less digits than its factorization.

215473123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10385.

The product of its digits is 5040, while the sum is 28.

The square root of 215473123 is about 14679.0027931055. The cubic root of 215473123 is about 599.5117537263.

The spelling of 215473123 in words is "two hundred fifteen million, four hundred seventy-three thousand, one hundred twenty-three".