1300023533 has 4 divisors (see below), whose sum is σ = 1341959808. Its totient is φ = 1258087260.

The previous prime is 1300023481. The next prime is 1300023553. The reversal of 1300023533 is 3353200031.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3353200031 = 73 ⋅45934247.

It is not a de Polignac number, because 1300023533 - 2¹⁰ = 1300022509 is a prime.

It is a super-2 number, since 2×1300023533² = 3380122372707604178, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

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

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20968091 + ... + 20968152.

It is an arithmetic number, because the mean of its divisors is an integer number (335489952).

Almost surely, 2^1300023533 is an apocalyptic number.

It is an amenable number.

1300023533 is a deficient number, since it is larger than the sum of its proper divisors (41936275).

1300023533 is an equidigital number, since it uses as much as digits as its factorization.

1300023533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41936274.

The product of its (nonzero) digits is 810, while the sum is 20.

The square root of 1300023533 is about 36055.8390971560. The cubic root of 1300023533 is about 1091.3994685980.

Adding to 1300023533 its reverse (3353200031), we get a palindrome (4653223564).

The spelling of 1300023533 in words is "one billion, three hundred million, twenty-three thousand, five hundred thirty-three".