920223287 has 2 divisors, whose sum is σ = 920223288. Its totient is φ = 920223286.

The previous prime is 920223281. The next prime is 920223289. The reversal of 920223287 is 782322029.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 920223287 - 2⁶ = 920223223 is a prime.

Together with 920223289, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (920223281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 460111643 + 460111644.

It is an arithmetic number, because the mean of its divisors is an integer number (460111644).

Almost surely, 2^920223287 is an apocalyptic number.

920223287 is a deficient number, since it is larger than the sum of its proper divisors (1).

920223287 is an equidigital number, since it uses as much as digits as its factorization.

920223287 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 920223287 is about 30335.1823300932. The cubic root of 920223287 is about 972.6675033473.

The spelling of 920223287 in words is "nine hundred twenty million, two hundred twenty-three thousand, two hundred eighty-seven".