1103111310331 has 4 divisors (see below), whose sum is σ = 1104311650000. Its totient is φ = 1101910970664.

The previous prime is 1103111310281. The next prime is 1103111310397. The reversal of 1103111310331 is 1330131113011.

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 1103111310331 - 2³⁵ = 1068751571963 is a prime.

It is a super-2 number, since 2×1103111310331² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1103111310299 and 1103111310308.

It is not an unprimeable number, because it can be changed into a prime (1103111310031) 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, 600168456 + ... + 600170293.

It is an arithmetic number, because the mean of its divisors is an integer number (276077912500).

Almost surely, 2^{1103111310331} is an apocalyptic number.

1103111310331 is a deficient number, since it is larger than the sum of its proper divisors (1200339669).

1103111310331 is an equidigital number, since it uses as much as digits as its factorization.

1103111310331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1200339668.

The product of its (nonzero) digits is 81, while the sum is 19.

Adding to 1103111310331 its reverse (1330131113011), we get a palindrome (2433242423342).

The spelling of 1103111310331 in words is "one trillion, one hundred three billion, one hundred eleven million, three hundred ten thousand, three hundred thirty-one".