13030331 has 4 divisors (see below), whose sum is σ = 13062600. Its totient is φ = 12998064.

The previous prime is 13030319. The next prime is 13030343. The reversal of 13030331 is 13303031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13303031 = 7 ⋅1900433.

It is an interprime number because it is at equal distance from previous prime (13030319) and next prime (13030343).

It is a cyclic number.

It is not a de Polignac number, because 13030331 - 2⁶ = 13030267 is a prime.

It is a super-2 number, since 2×13030331² = 339579051939122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13030231) 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, 15521 + ... + 16338.

It is an arithmetic number, because the mean of its divisors is an integer number (3265650).

Almost surely, 2^13030331 is an apocalyptic number.

13030331 is a deficient number, since it is larger than the sum of its proper divisors (32269).

13030331 is an equidigital number, since it uses as much as digits as its factorization.

13030331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32268.

The product of its (nonzero) digits is 81, while the sum is 14.

The square root of 13030331 is about 3609.7549778344. The cubic root of 13030331 is about 235.3161942558.

Adding to 13030331 its reverse (13303031), we get a palindrome (26333362).

The spelling of 13030331 in words is "thirteen million, thirty thousand, three hundred thirty-one".