11867422131 has 8 divisors (see below), whose sum is σ = 17581366160. Its totient is φ = 7911614736.

The previous prime is 11867422117. The next prime is 11867422141. The reversal of 11867422131 is 13122476811.

It is not a de Polignac number, because 11867422131 - 2¹³ = 11867413939 is a prime.

It is a super-2 number, since 2×11867422131² (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 (11867422141) 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, 219767050 + ... + 219767103.

It is an arithmetic number, because the mean of its divisors is an integer number (2197670770).

Almost surely, 2^11867422131 is an apocalyptic number.

11867422131 is a deficient number, since it is larger than the sum of its proper divisors (5713944029).

11867422131 is an equidigital number, since it uses as much as digits as its factorization.

11867422131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439534162 (or 439534156 counting only the distinct ones).

The product of its digits is 16128, while the sum is 36.

Adding to 11867422131 its reverse (13122476811), we get a palindrome (24989898942).

The spelling of 11867422131 in words is "eleven billion, eight hundred sixty-seven million, four hundred twenty-two thousand, one hundred thirty-one".