1000451023 has 48 divisors (see below), whose sum is σ = 1274313600. Its totient is φ = 771975360.

The previous prime is 1000451021. The next prime is 1000451027. The reversal of 1000451023 is 3201540001.

It is not a de Polignac number, because 1000451023 - 2¹ = 1000451021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1000450988 and 1000451006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000451021) 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 47 ways as a sum of consecutive naturals, for example, 12663898 + ... + 12663976.

It is an arithmetic number, because the mean of its divisors is an integer number (26548200).

Almost surely, 2^1000451023 is an apocalyptic number.

1000451023 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1000451023 is a deficient number, since it is larger than the sum of its proper divisors (273862577).

1000451023 is a wasteful number, since it uses less digits than its factorization.

1000451023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260 (or 181 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 1000451023 is about 31629.9070975556. The cubic root of 1000451023 is about 1000.1503184032.

Adding to 1000451023 its reverse (3201540001), we get a palindrome (4201991024).

The spelling of 1000451023 in words is "one billion, four hundred fifty-one thousand, twenty-three".