216370723 has 2 divisors, whose sum is σ = 216370724. Its totient is φ = 216370722.

The previous prime is 216370681. The next prime is 216370741. The reversal of 216370723 is 327073612.

216370723 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-216370723 is a prime.

It is not a weakly prime, because it can be changed into another prime (216377723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108185361 + 108185362.

It is an arithmetic number, because the mean of its divisors is an integer number (108185362).

Almost surely, 2^216370723 is an apocalyptic number.

216370723 is a deficient number, since it is larger than the sum of its proper divisors (1).

216370723 is an equidigital number, since it uses as much as digits as its factorization.

216370723 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10584, while the sum is 31.

The square root of 216370723 is about 14709.5453022859. The cubic root of 216370723 is about 600.3430658427.

The spelling of 216370723 in words is "two hundred sixteen million, three hundred seventy thousand, seven hundred twenty-three".