1306434503 has 4 divisors (see below), whose sum is σ = 1425201288. Its totient is φ = 1187667720.

The previous prime is 1306434469. The next prime is 1306434529. The reversal of 1306434503 is 3054346031.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1306434503 - 2⁶ = 1306434439 is a prime.

It is a super-2 number, since 2×1306434503² = 3413542221257714018, 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 (1306434203) 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, 59383376 + ... + 59383397.

It is an arithmetic number, because the mean of its divisors is an integer number (356300322).

Almost surely, 2^1306434503 is an apocalyptic number.

1306434503 is a deficient number, since it is larger than the sum of its proper divisors (118766785).

1306434503 is a wasteful number, since it uses less digits than its factorization.

1306434503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118766784.

The product of its (nonzero) digits is 12960, while the sum is 29.

The square root of 1306434503 is about 36144.6331147516. The cubic root of 1306434503 is about 1093.1905795197.

The spelling of 1306434503 in words is "one billion, three hundred six million, four hundred thirty-four thousand, five hundred three".