1023081273 has 12 divisors (see below), whose sum is σ = 1532517168. Its totient is φ = 682054020.

The previous prime is 1023081263. The next prime is 1023081287. The reversal of 1023081273 is 3721803201.

It is not a de Polignac number, because 1023081273 - 2⁶ = 1023081209 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1023081263) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2104863 + ... + 2105348.

It is an arithmetic number, because the mean of its divisors is an integer number (127709764).

Almost surely, 2^1023081273 is an apocalyptic number.

It is an amenable number.

1023081273 is a deficient number, since it is larger than the sum of its proper divisors (509435895).

1023081273 is an frugal number, since it uses more digits than its factorization.

1023081273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4210226 (or 4210214 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 1023081273 is about 31985.6416693491. The cubic root of 1023081273 is about 1007.6353113134.

Adding to 1023081273 its reverse (3721803201), we get a palindrome (4744884474).

The spelling of 1023081273 in words is "one billion, twenty-three million, eighty-one thousand, two hundred seventy-three".