13343531 has 2 divisors, whose sum is σ = 13343532. Its totient is φ = 13343530.

The previous prime is 13343507. The next prime is 13343549. The reversal of 13343531 is 13534331.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13343531 is a prime.

It is a super-2 number, since 2×13343531² = 356099639095922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13343497 and 13343506.

It is not a weakly prime, because it can be changed into another prime (13343581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6671765 + 6671766.

It is an arithmetic number, because the mean of its divisors is an integer number (6671766).

Almost surely, 2^13343531 is an apocalyptic number.

13343531 is a deficient number, since it is larger than the sum of its proper divisors (1).

13343531 is an equidigital number, since it uses as much as digits as its factorization.

13343531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1620, while the sum is 23.

The square root of 13343531 is about 3652.8798228247. The cubic root of 13343531 is about 237.1866582476.

Adding to 13343531 its reverse (13534331), we get a palindrome (26877862).

The spelling of 13343531 in words is "thirteen million, three hundred forty-three thousand, five hundred thirty-one".