215314933 has 12 divisors (see below), whose sum is σ = 226193484. Its totient is φ = 204897600.

The previous prime is 215314927. The next prime is 215314949. The reversal of 215314933 is 339413512.

It can be written as a sum of positive squares in 2 ways, for example, as 10195249 + 205119684 = 3193^2 + 14322^2 .

It is a de Polignac number, because none of the positive numbers 2^k-215314933 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a junction number, because it is equal to n+sod(n) for n = 215314895 and 215314904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215314133) 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 in 11 ways as a sum of consecutive naturals, for example, 56785 + ... + 60457.

It is an arithmetic number, because the mean of its divisors is an integer number (18849457).

Almost surely, 2^215314933 is an apocalyptic number.

It is an amenable number.

215314933 is a deficient number, since it is larger than the sum of its proper divisors (10878551).

215314933 is an equidigital number, since it uses as much as digits as its factorization.

215314933 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3796 (or 3765 counting only the distinct ones).

The product of its digits is 9720, while the sum is 31.

The square root of 215314933 is about 14673.6134949780. The cubic root of 215314933 is about 599.3650069137.

The spelling of 215314933 in words is "two hundred fifteen million, three hundred fourteen thousand, nine hundred thirty-three".