1003121112311 has 4 divisors (see below), whose sum is σ = 1003123916400. Its totient is φ = 1003118308224.

The previous prime is 1003121112293. The next prime is 1003121112353. The reversal of 1003121112311 is 1132111213001.

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 1003121112311 - 2²² = 1003116918007 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1003121112311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1003124112311) 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, 770666 + ... + 1612503.

It is an arithmetic number, because the mean of its divisors is an integer number (250780979100).

Almost surely, 2^{1003121112311} is an apocalyptic number.

1003121112311 is a deficient number, since it is larger than the sum of its proper divisors (2804089).

1003121112311 is an equidigital number, since it uses as much as digits as its factorization.

1003121112311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2804088.

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 1003121112311 its reverse (1132111213001), we get a palindrome (2135232325312).

The spelling of 1003121112311 in words is "one trillion, three billion, one hundred twenty-one million, one hundred twelve thousand, three hundred eleven".