215228023 has 2 divisors, whose sum is σ = 215228024. Its totient is φ = 215228022.

The previous prime is 215228011. The next prime is 215228063. The reversal of 215228023 is 320822512.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 215228023 - 2¹⁷ = 215096951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (215228063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107614011 + 107614012.

It is an arithmetic number, because the mean of its divisors is an integer number (107614012).

Almost surely, 2^215228023 is an apocalyptic number.

215228023 is a deficient number, since it is larger than the sum of its proper divisors (1).

215228023 is an equidigital number, since it uses as much as digits as its factorization.

215228023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 215228023 is about 14670.6517578463. The cubic root of 215228023 is about 599.2843532370.

The spelling of 215228023 in words is "two hundred fifteen million, two hundred twenty-eight thousand, twenty-three".