1200013311 has 8 divisors (see below), whose sum is σ = 1828591744. Its totient is φ = 685721880.

The previous prime is 1200013273. The next prime is 1200013361. The reversal of 1200013311 is 1133100021.

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

It is not a de Polignac number, because 1200013311 - 2⁹ = 1200012799 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200013361) 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, 28571725 + ... + 28571766.

It is an arithmetic number, because the mean of its divisors is an integer number (228573968).

Almost surely, 2^1200013311 is an apocalyptic number.

1200013311 is a deficient number, since it is larger than the sum of its proper divisors (628578433).

1200013311 is an equidigital number, since it uses as much as digits as its factorization.

1200013311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57143501.

The product of its (nonzero) digits is 18, while the sum is 12.

The square root of 1200013311 is about 34641.2082785806. The cubic root of 1200013311 is about 1062.6624983481.

Adding to 1200013311 its reverse (1133100021), we get a palindrome (2333113332).

The spelling of 1200013311 in words is "one billion, two hundred million, thirteen thousand, three hundred eleven".