1201112311 has 8 divisors (see below), whose sum is σ = 1385294240. Its totient is φ = 1020079008.

The previous prime is 1201112299. The next prime is 1201112333. The reversal of 1201112311 is 1132111021.

It is a happy number.

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 1201112311 - 2¹³ = 1201104119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1201112291 and 1201112300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201112411) 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, 786336 + ... + 787861.

It is an arithmetic number, because the mean of its divisors is an integer number (173161780).

Almost surely, 2^1201112311 is an apocalyptic number.

1201112311 is a deficient number, since it is larger than the sum of its proper divisors (184181929).

1201112311 is a wasteful number, since it uses less digits than its factorization.

1201112311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1574313.

The product of its (nonzero) digits is 12, while the sum is 13.

The square root of 1201112311 is about 34657.0672590743. The cubic root of 1201112311 is about 1062.9868030139.

Adding to 1201112311 its reverse (1132111021), we get a palindrome (2333223332).

The spelling of 1201112311 in words is "one billion, two hundred one million, one hundred twelve thousand, three hundred eleven".