1000012023 has 6 divisors (see below), whose sum is σ = 1444461824. Its totient is φ = 666674676.

The previous prime is 1000012019. The next prime is 1000012037. The reversal of 1000012023 is 3202100001.

It is a happy number.

It is not a de Polignac number, because 1000012023 - 2² = 1000012019 is a prime.

It is a super-2 number, since 2×1000012023² = 2000048092289105058, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 111112447 = 1000012023 / (1 + 0 + 0 + 0 + 0 + 1 + 2 + 0 + 2 + 3).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1000011996 and 1000012014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000012523) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 55556215 + ... + 55556232.

Almost surely, 2^1000012023 is an apocalyptic number.

1000012023 is a deficient number, since it is larger than the sum of its proper divisors (444449801).

1000012023 is a wasteful number, since it uses less digits than its factorization.

1000012023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111112453 (or 111112450 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 1000012023 is about 31622.9667014339. The cubic root of 1000012023 is about 1000.0040076506.

Adding to 1000012023 its reverse (3202100001), we get a palindrome (4202112024).

The spelling of 1000012023 in words is "one billion, twelve thousand, twenty-three".