1200030031111 has 4 divisors (see below), whose sum is σ = 1200073681800. Its totient is φ = 1199986380424.

The previous prime is 1200030031069. The next prime is 1200030031153. The reversal of 1200030031111 is 1111300300021.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (1200030031069) and next prime (1200030031153).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1200030031111 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1200030031091 and 1200030031100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200030038111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21784081 + ... + 21839098.

It is an arithmetic number, because the mean of its divisors is an integer number (300018420450).

Almost surely, 2^{1200030031111} is an apocalyptic number.

1200030031111 is a deficient number, since it is larger than the sum of its proper divisors (43650689).

1200030031111 is an equidigital number, since it uses as much as digits as its factorization.

1200030031111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43650688.

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

Adding to 1200030031111 its reverse (1111300300021), we get a palindrome (2311330331132).

The spelling of 1200030031111 in words is "one trillion, two hundred billion, thirty million, thirty-one thousand, one hundred eleven".