1200031111013 has 24 divisors (see below), whose sum is σ = 1399355216640. Its totient is φ = 1026093610080.

The previous prime is 1200031111009. The next prime is 1200031111067. The reversal of 1200031111013 is 3101111300021.

It is a happy number.

It is not a de Polignac number, because 1200031111013 - 2² = 1200031111009 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200031111313) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 154063523 + ... + 154071311.

It is an arithmetic number, because the mean of its divisors is an integer number (58306467360).

Almost surely, 2^{1200031111013} is an apocalyptic number.

It is an amenable number.

1200031111013 is a deficient number, since it is larger than the sum of its proper divisors (199324105627).

1200031111013 is an equidigital number, since it uses as much as digits as its factorization.

1200031111013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15057 (or 15050 counting only the distinct ones).

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

Adding to 1200031111013 its reverse (3101111300021), we get a palindrome (4301142411034).

The spelling of 1200031111013 in words is "one trillion, two hundred billion, thirty-one million, one hundred eleven thousand, thirteen".