11013203123031 has 4 divisors (see below), whose sum is σ = 14684270830712. Its totient is φ = 7342135415352.

The previous prime is 11013203123011. The next prime is 11013203123033. The reversal of 11013203123031 is 13032130231011.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-11013203123031 is a prime.

It is a super-2 number, since 2×11013203123031² (a number of 27 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 = 11013203122989 and 11013203123007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11013203123033) 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, 1835533853836 + ... + 1835533853841.

It is an arithmetic number, because the mean of its divisors is an integer number (3671067707678).

Almost surely, 2^{11013203123031} is an apocalyptic number.

11013203123031 is a deficient number, since it is larger than the sum of its proper divisors (3671067707681).

11013203123031 is an equidigital number, since it uses as much as digits as its factorization.

11013203123031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3671067707680.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 11013203123031 its reverse (13032130231011), we get a palindrome (24045333354042).

The spelling of 11013203123031 in words is "eleven trillion, thirteen billion, two hundred three million, one hundred twenty-three thousand, thirty-one".