11020311133031 has 4 divisors (see below), whose sum is σ = 11175526782864. Its totient is φ = 10865095483200.

The previous prime is 11020311132917. The next prime is 11020311133049. The reversal of 11020311133031 is 13033111302011.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11020311133031 is a prime.

It is a super-2 number, since 2×11020311133031² (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 = 11020311132994 and 11020311133012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11020311933031) 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, 77607824810 + ... + 77607824951.

It is an arithmetic number, because the mean of its divisors is an integer number (2793881695716).

Almost surely, 2^{11020311133031} is an apocalyptic number.

11020311133031 is a deficient number, since it is larger than the sum of its proper divisors (155215649833).

11020311133031 is an equidigital number, since it uses as much as digits as its factorization.

11020311133031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155215649832.

The product of its (nonzero) digits is 162, while the sum is 20.

Adding to 11020311133031 its reverse (13033111302011), we get a palindrome (24053422435042).

The spelling of 11020311133031 in words is "eleven trillion, twenty billion, three hundred eleven million, one hundred thirty-three thousand, thirty-one".