1023309993 has 16 divisors (see below), whose sum is σ = 1379710976. Its totient is φ = 674593920.

The previous prime is 1023309977. The next prime is 1023310003. The reversal of 1023309993 is 3999033201.

It is not a de Polignac number, because 1023309993 - 2⁴ = 1023309977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1023309913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 114963 + ... + 123543.

It is an arithmetic number, because the mean of its divisors is an integer number (86231936).

Almost surely, 2^1023309993 is an apocalyptic number.

It is an amenable number.

1023309993 is a deficient number, since it is larger than the sum of its proper divisors (356400983).

1023309993 is a wasteful number, since it uses less digits than its factorization.

1023309993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9024.

The product of its (nonzero) digits is 39366, while the sum is 39.

The square root of 1023309993 is about 31989.2168237986. The cubic root of 1023309993 is about 1007.7103946857.

The spelling of 1023309993 in words is "one billion, twenty-three million, three hundred nine thousand, nine hundred ninety-three".