10421331 has 4 divisors (see below), whose sum is σ = 13895112. Its totient is φ = 6947552.

The previous prime is 10421317. The next prime is 10421371. The reversal of 10421331 is 13312401.

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

It is a cyclic number.

It is not a de Polignac number, because 10421331 - 2¹⁰ = 10420307 is a prime.

It is a super-2 number, since 2×10421331² = 217208279623122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 10421331.

It is not an unprimeable number, because it can be changed into a prime (10421311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1736886 + ... + 1736891.

It is an arithmetic number, because the mean of its divisors is an integer number (3473778).

Almost surely, 2^10421331 is an apocalyptic number.

10421331 is a deficient number, since it is larger than the sum of its proper divisors (3473781).

10421331 is an equidigital number, since it uses as much as digits as its factorization.

10421331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3473780.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 10421331 is about 3228.2086363802. The cubic root of 10421331 is about 218.4277086837.

Adding to 10421331 its reverse (13312401), we get a palindrome (23733732).

The spelling of 10421331 in words is "ten million, four hundred twenty-one thousand, three hundred thirty-one".