10531381 has 8 divisors (see below), whose sum is σ = 12744000. Its totient is φ = 8495808.

The previous prime is 10531373. The next prime is 10531429. The reversal of 10531381 is 18313501.

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

It is a cyclic number.

It is not a de Polignac number, because 10531381 - 2³ = 10531373 is a prime.

It is a super-2 number, since 2×10531381² = 221819971534322, 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 (10531361) 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, 44131 + ... + 44368.

It is an arithmetic number, because the mean of its divisors is an integer number (1593000).

Almost surely, 2^10531381 is an apocalyptic number.

It is an amenable number.

10531381 is a deficient number, since it is larger than the sum of its proper divisors (2212619).

10531381 is an equidigital number, since it uses as much as digits as its factorization.

10531381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88523.

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 10531381 is about 3245.2089300999. The cubic root of 10531381 is about 219.1938887444.

Adding to 10531381 its reverse (18313501), we get a palindrome (28844882).

The spelling of 10531381 in words is "ten million, five hundred thirty-one thousand, three hundred eighty-one".