10131856 has 40 divisors (see below), whose sum is σ = 22817984. Its totient is φ = 4268160.

The previous prime is 10131841. The next prime is 10131857. The reversal of 10131856 is 65813101.

It is a self number, because there is not a number n which added to its sum of digits gives 10131856.

It is not an unprimeable number, because it can be changed into a prime (10131857) 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, 6091 + ... + 7573.

Almost surely, 2^10131856 is an apocalyptic number.

10131856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10131856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11408992).

10131856 is an abundant number, since it is smaller than the sum of its proper divisors (12686128).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10131856 is a wasteful number, since it uses less digits than its factorization.

10131856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1559 (or 1553 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 10131856 is about 3183.0576494936. The cubic root of 10131856 is about 216.3862544698.

Adding to 10131856 its reverse (65813101), we get a palindrome (75944957).

The spelling of 10131856 in words is "ten million, one hundred thirty-one thousand, eight hundred fifty-six".