1213003031011 has 4 divisors (see below), whose sum is σ = 1245786896752. Its totient is φ = 1180219165272.

The previous prime is 1213003030979. The next prime is 1213003031059. The reversal of 1213003031011 is 1101303003121.

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

It is a cyclic number.

It is not a de Polignac number, because 1213003031011 - 2⁵ = 1213003030979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1213003031111) 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, 16391932815 + ... + 16391932888.

It is an arithmetic number, because the mean of its divisors is an integer number (311446724188).

Almost surely, 2^{1213003031011} is an apocalyptic number.

1213003031011 is a deficient number, since it is larger than the sum of its proper divisors (32783865741).

1213003031011 is an equidigital number, since it uses as much as digits as its factorization.

1213003031011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32783865740.

The product of its (nonzero) digits is 54, while the sum is 16.

Adding to 1213003031011 its reverse (1101303003121), we get a palindrome (2314306034132).

The spelling of 1213003031011 in words is "one trillion, two hundred thirteen billion, three million, thirty-one thousand, eleven".