10403881 has 4 divisors (see below), whose sum is σ = 11015892. Its totient is φ = 9791872.

The previous prime is 10403867. The next prime is 10403891. The reversal of 10403881 is 18830401.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5363856 + 5040025 = 2316^2 + 2245^2 .

It is a cyclic number.

It is not a de Polignac number, because 10403881 - 2⁷ = 10403753 is a prime.

It is a super-2 number, since 2×10403881² = 216481479724322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10403831) 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, 305980 + ... + 306013.

It is an arithmetic number, because the mean of its divisors is an integer number (2753973).

Almost surely, 2^10403881 is an apocalyptic number.

It is an amenable number.

10403881 is a deficient number, since it is larger than the sum of its proper divisors (612011).

10403881 is an equidigital number, since it uses as much as digits as its factorization.

10403881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 612010.

The product of its (nonzero) digits is 768, while the sum is 25.

The square root of 10403881 is about 3225.5047666993. The cubic root of 10403881 is about 218.3057251315.

The spelling of 10403881 in words is "ten million, four hundred three thousand, eight hundred eighty-one".