11031020203123 has 8 divisors (see below), whose sum is σ = 11288573583408. Its totient is φ = 10773513096864.

The previous prime is 11031020203117. The next prime is 11031020203141. The reversal of 11031020203123 is 32130202013011.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11031020203123 - 2³⁷ = 10893581249651 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11031020203123.

It is not an unprimeable number, because it can be changed into a prime (11031020293123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11085940 + ... + 12039937.

It is an arithmetic number, because the mean of its divisors is an integer number (1411071697926).

Almost surely, 2^{11031020203123} is an apocalyptic number.

11031020203123 is a deficient number, since it is larger than the sum of its proper divisors (257553380285).

11031020203123 is a wasteful number, since it uses less digits than its factorization.

11031020203123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23137013.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 11031020203123 its reverse (32130202013011), we get a palindrome (43161222216134).

The spelling of 11031020203123 in words is "eleven trillion, thirty-one billion, twenty million, two hundred three thousand, one hundred twenty-three".