10216531 has 16 divisors (see below), whose sum is σ = 11741184. Its totient is φ = 8816544.

The previous prime is 10216519. The next prime is 10216537. The reversal of 10216531 is 13561201.

It is not a de Polignac number, because 10216531 - 2²¹ = 8119379 is a prime.

It is a super-2 number, since 2×10216531² = 208755011347922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10216499 and 10216508.

It is not an unprimeable number, because it can be changed into a prime (10216537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13690 + ... + 14416.

It is an arithmetic number, because the mean of its divisors is an integer number (733824).

Almost surely, 2^10216531 is an apocalyptic number.

10216531 is a deficient number, since it is larger than the sum of its proper divisors (1524653).

10216531 is a wasteful number, since it uses less digits than its factorization.

10216531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 810.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 10216531 is about 3196.3308652266. The cubic root of 10216531 is about 216.9873848556.

Adding to 10216531 its reverse (13561201), we get a palindrome (23777732).

The spelling of 10216531 in words is "ten million, two hundred sixteen thousand, five hundred thirty-one".