13280831 has 2 divisors, whose sum is σ = 13280832. Its totient is φ = 13280830.

The previous prime is 13280819. The next prime is 13280863. The reversal of 13280831 is 13808231.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13280831 - 2¹⁰ = 13279807 is a prime.

It is a super-2 number, since 2×13280831² = 352760944101122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is equal to p₈₆₆₃₃₀ and since 13280831 and 866330 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13280831.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13280881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6640415 + 6640416.

It is an arithmetic number, because the mean of its divisors is an integer number (6640416).

Almost surely, 2^13280831 is an apocalyptic number.

13280831 is a deficient number, since it is larger than the sum of its proper divisors (1).

13280831 is an equidigital number, since it uses as much as digits as its factorization.

13280831 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 13280831 is about 3644.2874474992. The cubic root of 13280831 is about 236.8145688835.

The spelling of 13280831 in words is "thirteen million, two hundred eighty thousand, eight hundred thirty-one".