1300023523 has 4 divisors (see below), whose sum is σ = 1322057880. Its totient is φ = 1277989168.

The previous prime is 1300023481. The next prime is 1300023553. The reversal of 1300023523 is 3253200031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3253200031 = 569 ⋅5717399.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1300023523 is a prime.

It is a super-2 number, since 2×1300023523² = 3380122320706663058, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1300023523.

It is not an unprimeable number, because it can be changed into a prime (1300023553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11017090 + ... + 11017207.

It is an arithmetic number, because the mean of its divisors is an integer number (330514470).

Almost surely, 2^1300023523 is an apocalyptic number.

1300023523 is a deficient number, since it is larger than the sum of its proper divisors (22034357).

1300023523 is an equidigital number, since it uses as much as digits as its factorization.

1300023523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22034356.

The product of its (nonzero) digits is 540, while the sum is 19.

The square root of 1300023523 is about 36055.8389584822. The cubic root of 1300023523 is about 1091.3994657996.

Adding to 1300023523 its reverse (3253200031), we get a palindrome (4553223554).

The spelling of 1300023523 in words is "one billion, three hundred million, twenty-three thousand, five hundred twenty-three".