1023409273 has 2 divisors, whose sum is σ = 1023409274. Its totient is φ = 1023409272.

The previous prime is 1023409271. The next prime is 1023409337. The reversal of 1023409273 is 3729043201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 811794064 + 211615209 = 28492^2 + 14547^2 .

It is a cyclic number.

It is not a de Polignac number, because 1023409273 - 2¹ = 1023409271 is a prime.

Together with 1023409271, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1023409271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511704636 + 511704637.

It is an arithmetic number, because the mean of its divisors is an integer number (511704637).

Almost surely, 2^1023409273 is an apocalyptic number.

It is an amenable number.

1023409273 is a deficient number, since it is larger than the sum of its proper divisors (1).

1023409273 is an equidigital number, since it uses as much as digits as its factorization.

1023409273 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 1023409273 is about 31990.7685590703. The cubic root of 1023409273 is about 1007.7429824819.

The spelling of 1023409273 in words is "one billion, twenty-three million, four hundred nine thousand, two hundred seventy-three".