1200331145 has 8 divisors (see below), whose sum is σ = 1551197256. Its totient is φ = 886398336.

The previous prime is 1200331133. The next prime is 1200331147. The reversal of 1200331145 is 5411330021.

It can be written as a sum of positive squares in 4 ways, for example, as 245768329 + 954562816 = 15677^2 + 30896^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1200331145 - 2⁶ = 1200331081 is a prime.

It is a super-2 number, since 2×1200331145² = 2881589715314022050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1200331147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9233252 + ... + 9233381.

It is an arithmetic number, because the mean of its divisors is an integer number (193899657).

Almost surely, 2^1200331145 is an apocalyptic number.

It is an amenable number.

1200331145 is a deficient number, since it is larger than the sum of its proper divisors (350866111).

1200331145 is a wasteful number, since it uses less digits than its factorization.

1200331145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18466651.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 1200331145 is about 34645.7954880531. The cubic root of 1200331145 is about 1062.7563085459.

Adding to 1200331145 its reverse (5411330021), we get a palindrome (6611661166).

The spelling of 1200331145 in words is "one billion, two hundred million, three hundred thirty-one thousand, one hundred forty-five".