11031031001123 has 4 divisors (see below), whose sum is σ = 12606892572720. Its totient is φ = 9455169429528.

The previous prime is 11031031001119. The next prime is 11031031001219. The reversal of 11031031001123 is 32110013013011.

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 11031031001123 - 2² = 11031031001119 is a prime.

It is a super-2 number, since 2×11031031001123² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11031031007123) 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, 787930785788 + ... + 787930785801.

It is an arithmetic number, because the mean of its divisors is an integer number (3151723143180).

Almost surely, 2^{11031031001123} is an apocalyptic number.

11031031001123 is a deficient number, since it is larger than the sum of its proper divisors (1575861571597).

11031031001123 is an equidigital number, since it uses as much as digits as its factorization.

11031031001123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1575861571596.

The product of its (nonzero) digits is 54, while the sum is 17.

Adding to 11031031001123 its reverse (32110013013011), we get a palindrome (43141044014134).

The spelling of 11031031001123 in words is "eleven trillion, thirty-one billion, thirty-one million, one thousand, one hundred twenty-three".