1200131311 has 8 divisors (see below), whose sum is σ = 1233999360. Its totient is φ = 1166679072.

The previous prime is 1200131287. The next prime is 1200131363. The reversal of 1200131311 is 1131310021.

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 1200131311 - 2⁷ = 1200131183 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 1200131291 and 1200131300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200131381) 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, 98095 + ... + 109648.

It is an arithmetic number, because the mean of its divisors is an integer number (154249920).

Almost surely, 2^1200131311 is an apocalyptic number.

1200131311 is a deficient number, since it is larger than the sum of its proper divisors (33868049).

1200131311 is a wasteful number, since it uses less digits than its factorization.

1200131311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207905.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 1200131311 is about 34642.9114105613. The cubic root of 1200131311 is about 1062.6973285354.

Adding to 1200131311 its reverse (1131310021), we get a palindrome (2331441332).

The spelling of 1200131311 in words is "one billion, two hundred million, one hundred thirty-one thousand, three hundred eleven".