10881381 has 24 divisors (see below), whose sum is σ = 17109120. Its totient is φ = 6132672.

The previous prime is 10881379. The next prime is 10881397. The reversal of 10881381 is 18318801.

It is not a de Polignac number, because 10881381 - 2¹ = 10881379 is a prime.

It is a super-2 number, since 2×10881381² = 236808904934322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10881301) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11145 + ... + 12081.

It is an arithmetic number, because the mean of its divisors is an integer number (712880).

Almost surely, 2^10881381 is an apocalyptic number.

It is an amenable number.

10881381 is a deficient number, since it is larger than the sum of its proper divisors (6227739).

10881381 is an equidigital number, since it uses as much as digits as its factorization.

10881381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1033 (or 1026 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 30.

The square root of 10881381 is about 3298.6938324131. The cubic root of 10881381 is about 221.5957052020.

The spelling of 10881381 in words is "ten million, eight hundred eighty-one thousand, three hundred eighty-one".