1002355313 has 4 divisors (see below), whose sum is σ = 1011225828. Its totient is φ = 993484800.

The previous prime is 1002355303. The next prime is 1002355337. The reversal of 1002355313 is 3135532001.

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

It can be written as a sum of positive squares in 2 ways, for example, as 7772944 + 994582369 = 2788^2 + 31537^2 .

It is a cyclic number.

It is not a de Polignac number, because 1002355313 - 2²⁰ = 1001306737 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1002355303) 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, 4435088 + ... + 4435313.

It is an arithmetic number, because the mean of its divisors is an integer number (252806457).

Almost surely, 2^1002355313 is an apocalyptic number.

It is an amenable number.

1002355313 is a deficient number, since it is larger than the sum of its proper divisors (8870515).

1002355313 is an equidigital number, since it uses as much as digits as its factorization.

1002355313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8870514.

The product of its (nonzero) digits is 1350, while the sum is 23.

The square root of 1002355313 is about 31659.9954674665. The cubic root of 1002355313 is about 1000.7844887498.

Adding to 1002355313 its reverse (3135532001), we get a palindrome (4137887314).

The spelling of 1002355313 in words is "one billion, two million, three hundred fifty-five thousand, three hundred thirteen".