1300020003 has 8 divisors (see below), whose sum is σ = 1925955600. Its totient is φ = 866679984.

The previous prime is 1300019977. The next prime is 1300020013. The reversal of 1300020003 is 3000200031.

It is a happy number.

It is not a de Polignac number, because 1300020003 - 2⁶ = 1300019939 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (1300020013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24074418 + ... + 24074471.

It is an arithmetic number, because the mean of its divisors is an integer number (240744450).

Almost surely, 2^1300020003 is an apocalyptic number.

1300020003 is a deficient number, since it is larger than the sum of its proper divisors (625935597).

1300020003 is an equidigital number, since it uses as much as digits as its factorization.

1300020003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48148898 (or 48148892 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 9.

The square root of 1300020003 is about 36055.7901452735. The cubic root of 1300020003 is about 1091.3984807585.

Adding to 1300020003 its reverse (3000200031), we get a palindrome (4300220034).

The spelling of 1300020003 in words is "one billion, three hundred million, twenty thousand, three".