11869831 has 4 divisors (see below), whose sum is σ = 11980872. Its totient is φ = 11758792.

The previous prime is 11869811. The next prime is 11869861. The reversal of 11869831 is 13896811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13896811 = 79 ⋅175909.

It is a cyclic number.

It is not a de Polignac number, because 11869831 - 2¹¹ = 11867783 is a prime.

It is a super-2 number, since 2×11869831² = 281785775937122, 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 (11869811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55360 + ... + 55573.

It is an arithmetic number, because the mean of its divisors is an integer number (2995218).

Almost surely, 2^11869831 is an apocalyptic number.

11869831 is a deficient number, since it is larger than the sum of its proper divisors (111041).

11869831 is a wasteful number, since it uses less digits than its factorization.

11869831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111040.

The product of its digits is 10368, while the sum is 37.

The square root of 11869831 is about 3445.2621090419. The cubic root of 11869831 is about 228.1120243073.

The spelling of 11869831 in words is "eleven million, eight hundred sixty-nine thousand, eight hundred thirty-one".