1201113311 has 8 divisors (see below), whose sum is σ = 1229629584. Its totient is φ = 1172923200.

The previous prime is 1201113307. The next prime is 1201113349. The reversal of 1201113311 is 1133111021.

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 1201113311 - 2² = 1201113307 is a prime.

It is a super-2 number, since 2×1201113311² = 2885346371722765442, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201113301) 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, 74081 + ... + 88826.

It is an arithmetic number, because the mean of its divisors is an integer number (153703698).

Almost surely, 2^1201113311 is an apocalyptic number.

1201113311 is a deficient number, since it is larger than the sum of its proper divisors (28516273).

1201113311 is a wasteful number, since it uses less digits than its factorization.

1201113311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163081.

The product of its (nonzero) digits is 18, while the sum is 14.

The square root of 1201113311 is about 34657.0816861432. The cubic root of 1201113311 is about 1062.9870980145.

Adding to 1201113311 its reverse (1133111021), we get a palindrome (2334224332).

The spelling of 1201113311 in words is "one billion, two hundred one million, one hundred thirteen thousand, three hundred eleven".