1204020313 has 4 divisors (see below), whose sum is σ = 1206004480. Its totient is φ = 1202036148.

The previous prime is 1204020299. The next prime is 1204020319. The reversal of 1204020313 is 3130204021.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 1204020313 - 2⁵ = 1204020281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1204020319) 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, 991173 + ... + 992386.

It is an arithmetic number, because the mean of its divisors is an integer number (301501120).

Almost surely, 2^1204020313 is an apocalyptic number.

It is an amenable number.

1204020313 is a deficient number, since it is larger than the sum of its proper divisors (1984167).

1204020313 is an equidigital number, since it uses as much as digits as its factorization.

1204020313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1984166.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 1204020313 is about 34698.9958500242. The cubic root of 1204020313 is about 1063.8439741558.

Adding to 1204020313 its reverse (3130204021), we get a palindrome (4334224334).

The spelling of 1204020313 in words is "one billion, two hundred four million, twenty thousand, three hundred thirteen".