215001233 has 2 divisors, whose sum is σ = 215001234. Its totient is φ = 215001232.

The previous prime is 215001229. The next prime is 215001341. The reversal of 215001233 is 332100512.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 201838849 + 13162384 = 14207^2 + 3628^2 .

It is a cyclic number.

It is not a de Polignac number, because 215001233 - 2² = 215001229 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (215001203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107500616 + 107500617.

It is an arithmetic number, because the mean of its divisors is an integer number (107500617).

Almost surely, 2^215001233 is an apocalyptic number.

It is an amenable number.

215001233 is a deficient number, since it is larger than the sum of its proper divisors (1).

215001233 is an equidigital number, since it uses as much as digits as its factorization.

215001233 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 215001233 is about 14662.9203435059. The cubic root of 215001233 is about 599.0737866913.

Subtracting from 215001233 its sum of digits (17), we obtain a triangular number (215001216 = T₂₀₇₃₆).

Adding to 215001233 its reverse (332100512), we get a palindrome (547101745).

The spelling of 215001233 in words is "two hundred fifteen million, one thousand, two hundred thirty-three".