1200331313 has 4 divisors (see below), whose sum is σ = 1210953828. Its totient is φ = 1189708800.

The previous prime is 1200331277. The next prime is 1200331361. The reversal of 1200331313 is 3131330021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3131330021 = 47 ⋅66624043.

It can be written as a sum of positive squares in 2 ways, for example, as 132871729 + 1067459584 = 11527^2 + 32672^2 .

It is a cyclic number.

It is not a de Polignac number, because 1200331313 - 2⁸ = 1200331057 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1200331291 and 1200331300.

It is not an unprimeable number, because it can be changed into a prime (1200331513) 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, 5311088 + ... + 5311313.

It is an arithmetic number, because the mean of its divisors is an integer number (302738457).

Almost surely, 2^1200331313 is an apocalyptic number.

It is an amenable number.

1200331313 is a deficient number, since it is larger than the sum of its proper divisors (10622515).

1200331313 is a wasteful number, since it uses less digits than its factorization.

1200331313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10622514.

The product of its (nonzero) digits is 162, while the sum is 17.

The square root of 1200331313 is about 34645.7979125896. The cubic root of 1200331313 is about 1062.7563581275.

Adding to 1200331313 its reverse (3131330021), we get a palindrome (4331661334).

The spelling of 1200331313 in words is "one billion, two hundred million, three hundred thirty-one thousand, three hundred thirteen".