13424331 has 16 divisors (see below), whose sum is σ = 18386720. Its totient is φ = 8709120.
The previous prime is 13424311. The next prime is 13424347. The reversal of 13424331 is 13342431.
It is not a de Polignac number, because 13424331 - 210 = 13423307 is a prime.
It is a super-2 number, since 2×134243312 = 360425325595122, which contains 22 as substring.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 13424298 and 13424307.
It is not an unprimeable number, because it can be changed into a prime (13424311) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19611 + ... + 20283.
It is an arithmetic number, because the mean of its divisors is an integer number (1149170).
Almost surely, 213424331 is an apocalyptic number.
13424331 is a deficient number, since it is larger than the sum of its proper divisors (4962389).
13424331 is a wasteful number, since it uses less digits than its factorization.
13424331 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 846.
The product of its digits is 864, while the sum is 21.
The square root of 13424331 is about 3663.9228976604. The cubic root of 13424331 is about 237.6644460367.
Adding to 13424331 its reverse (13342431), we get a palindrome (26766762).
The spelling of 13424331 in words is "thirteen million, four hundred twenty-four thousand, three hundred thirty-one".
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