11100020131 has 4 divisors (see below), whose sum is σ = 11139522264. Its totient is φ = 11060518000.

The previous prime is 11100020119. The next prime is 11100020143. The reversal of 11100020131 is 13102000111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13102000111 = 43 ⋅304697677.

It is an interprime number because it is at equal distance from previous prime (11100020119) and next prime (11100020143).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11100020131 is a prime.

It is a super-2 number, since 2×11100020131² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11100027131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19750645 + ... + 19751206.

It is an arithmetic number, because the mean of its divisors is an integer number (2784880566).

Almost surely, 2^11100020131 is an apocalyptic number.

11100020131 is a deficient number, since it is larger than the sum of its proper divisors (39502133).

11100020131 is an equidigital number, since it uses as much as digits as its factorization.

11100020131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39502132.

The product of its (nonzero) digits is 6, while the sum is 10.

Adding to 11100020131 its reverse (13102000111), we get a palindrome (24202020242).

It can be divided in two parts, 111000 and 20131, that added together give a palindrome (131131).

The spelling of 11100020131 in words is "eleven billion, one hundred million, twenty thousand, one hundred thirty-one".