10311521 has 16 divisors (see below), whose sum is σ = 11975040. Its totient is φ = 8785920.

The previous prime is 10311487. The next prime is 10311527. The reversal of 10311521 is 12511301.

It is a de Polignac number, because none of the positive numbers 2^k-10311521 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10311496 and 10311505.

It is not an unprimeable number, because it can be changed into a prime (10311527) 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, 13025 + ... + 13793.

It is an arithmetic number, because the mean of its divisors is an integer number (748440).

Almost surely, 2^10311521 is an apocalyptic number.

10311521 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10311521 is a deficient number, since it is larger than the sum of its proper divisors (1663519).

10311521 is a wasteful number, since it uses less digits than its factorization.

10311521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 856.

The product of its (nonzero) digits is 30, while the sum is 14.

The square root of 10311521 is about 3211.1557109552. The cubic root of 10311521 is about 217.6578041831.

Adding to 10311521 its reverse (12511301), we get a palindrome (22822822).

It can be divided in two parts, 1031 and 1521, that added together give a palindrome (2552).

The spelling of 10311521 in words is "ten million, three hundred eleven thousand, five hundred twenty-one".