1300023021 has 16 divisors (see below), whose sum is σ = 1900454400. Its totient is φ = 783929520.

The previous prime is 1300023017. The next prime is 1300023041. The reversal of 1300023021 is 1203200031.

It is a happy number.

It is not a de Polignac number, because 1300023021 - 2² = 1300023017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1300022988 and 1300023006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1300023041) 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, 92415 + ... + 105548.

It is an arithmetic number, because the mean of its divisors is an integer number (118778400).

Almost surely, 2^1300023021 is an apocalyptic number.

1300023021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1300023021 is a deficient number, since it is larger than the sum of its proper divisors (600431379).

1300023021 is a wasteful number, since it uses less digits than its factorization.

1300023021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198176.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 1300023021 is about 36055.8319970570. The cubic root of 1300023021 is about 1091.3993253194.

Adding to 1300023021 its reverse (1203200031), we get a palindrome (2503223052).

The spelling of 1300023021 in words is "one billion, three hundred million, twenty-three thousand, twenty-one".