1103020031213 has 4 divisors (see below), whose sum is σ = 1103280120348. Its totient is φ = 1102759942080.

The previous prime is 1103020031171. The next prime is 1103020031221. The reversal of 1103020031213 is 3121300203011.

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

It can be written as a sum of positive squares in 2 ways, for example, as 499224207364 + 603795823849 = 706558^2 + 777043^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1103020031213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1103020031191 and 1103020031200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1103020031513) 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, 130038206 + ... + 130046687.

It is an arithmetic number, because the mean of its divisors is an integer number (275820030087).

Almost surely, 2^{1103020031213} is an apocalyptic number.

It is an amenable number.

1103020031213 is a deficient number, since it is larger than the sum of its proper divisors (260089135).

1103020031213 is an equidigital number, since it uses as much as digits as its factorization.

1103020031213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260089134.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 1103020031213 its reverse (3121300203011), we get a palindrome (4224320234224).

The spelling of 1103020031213 in words is "one trillion, one hundred three billion, twenty million, thirty-one thousand, two hundred thirteen".