10521312 has 24 divisors (see below), whose sum is σ = 27618696. Its totient is φ = 3507072.

The previous prime is 10521311. The next prime is 10521331. The reversal of 10521312 is 21312501.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×10521312² = 221396012402688, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10521291 and 10521300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10521311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54703 + ... + 54894.

It is an arithmetic number, because the mean of its divisors is an integer number (1150779).

Almost surely, 2^10521312 is an apocalyptic number.

10521312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

10521312 is an abundant number, since it is smaller than the sum of its proper divisors (17097384).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10521312 is a wasteful number, since it uses less digits than its factorization.

10521312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109610 (or 109602 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 10521312 is about 3243.6571952042. The cubic root of 10521312 is about 219.1240097473.

Adding to 10521312 its reverse (21312501), we get a palindrome (31833813).

The spelling of 10521312 in words is "ten million, five hundred twenty-one thousand, three hundred twelve".