10861831 has 8 divisors (see below), whose sum is σ = 11230064. Its totient is φ = 10497600.

The previous prime is 10861817. The next prime is 10861859. The reversal of 10861831 is 13816801.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a 6-Lehmer number, since φ(10861831) divides (10861831-1)⁶.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10861831 is a prime.

It is a super-2 number, since 2×10861831² = 235958745345122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10861831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10861801) 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 7 ways as a sum of consecutive naturals, for example, 5131 + ... + 6931.

It is an arithmetic number, because the mean of its divisors is an integer number (1403758).

Almost surely, 2^10861831 is an apocalyptic number.

10861831 is a deficient number, since it is larger than the sum of its proper divisors (368233).

10861831 is a wasteful number, since it uses less digits than its factorization.

10861831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2001.

The product of its (nonzero) digits is 1152, while the sum is 28.

The square root of 10861831 is about 3295.7292061090. The cubic root of 10861831 is about 221.4629158957.

The spelling of 10861831 in words is "ten million, eight hundred sixty-one thousand, eight hundred thirty-one".