11885130431 has 4 divisors (see below), whose sum is σ = 12035575200. Its totient is φ = 11734685664.

The previous prime is 11885130421. The next prime is 11885130461. The reversal of 11885130431 is 13403158811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13403158811 = 7 ⋅1914736973.

It is a cyclic number.

It is not a de Polignac number, because 11885130431 - 2²² = 11880936127 is a prime.

It is a super-2 number, since 2×11885130431² (a number of 21 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 = 11885130391 and 11885130400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11885130421) 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, 75222266 + ... + 75222423.

It is an arithmetic number, because the mean of its divisors is an integer number (3008893800).

Almost surely, 2^11885130431 is an apocalyptic number.

11885130431 is a deficient number, since it is larger than the sum of its proper divisors (150444769).

11885130431 is an equidigital number, since it uses as much as digits as its factorization.

11885130431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150444768.

The product of its (nonzero) digits is 11520, while the sum is 35.

The spelling of 11885130431 in words is "eleven billion, eight hundred eighty-five million, one hundred thirty thousand, four hundred thirty-one".