1303312999 has 4 divisors (see below), whose sum is σ = 1371908440. Its totient is φ = 1234717560.

The previous prime is 1303312993. The next prime is 1303313003. The reversal of 1303312999 is 9992133031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9992133031 = 1063 ⋅9399937.

It is a cyclic number.

It is not a de Polignac number, because 1303312999 - 2⁹ = 1303312487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1303312993) 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, 34297692 + ... + 34297729.

It is an arithmetic number, because the mean of its divisors is an integer number (342977110).

Almost surely, 2^1303312999 is an apocalyptic number.

1303312999 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1303312999 is a deficient number, since it is larger than the sum of its proper divisors (68595441).

1303312999 is an equidigital number, since it uses as much as digits as its factorization.

1303312999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68595440.

The product of its (nonzero) digits is 39366, while the sum is 40.

The square root of 1303312999 is about 36101.4265507611. The cubic root of 1303312999 is about 1092.3192205767.

The spelling of 1303312999 in words is "one billion, three hundred three million, three hundred twelve thousand, nine hundred ninety-nine".