11888831 has 4 divisors (see below), whose sum is σ = 12588192. Its totient is φ = 11189472.

The previous prime is 11888827. The next prime is 11888867. The reversal of 11888831 is 13888811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13888811 = 2377 ⋅5843.

It is a cyclic number.

It is not a de Polignac number, because 11888831 - 2² = 11888827 is a prime.

It is a super-2 number, since 2×11888831² = 282688605093122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11888431) 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, 349655 + ... + 349688.

It is an arithmetic number, because the mean of its divisors is an integer number (3147048).

Almost surely, 2^11888831 is an apocalyptic number.

11888831 is a deficient number, since it is larger than the sum of its proper divisors (699361).

11888831 is an equidigital number, since it uses as much as digits as its factorization.

11888831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 699360.

The product of its digits is 12288, while the sum is 38.

The square root of 11888831 is about 3448.0184164241. The cubic root of 11888831 is about 228.2336721492.

The spelling of 11888831 in words is "eleven million, eight hundred eighty-eight thousand, eight hundred thirty-one".