13343731 has 2 divisors, whose sum is σ = 13343732. Its totient is φ = 13343730.

The previous prime is 13343647. The next prime is 13343747. The reversal of 13343731 is 13734331.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13343731 - 2¹¹ = 13341683 is a prime.

It is a super-2 number, since 2×13343731² = 356110314000722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13343696 and 13343705.

It is not a weakly prime, because it can be changed into another prime (13343431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6671865 + 6671866.

It is an arithmetic number, because the mean of its divisors is an integer number (6671866).

Almost surely, 2^13343731 is an apocalyptic number.

13343731 is a deficient number, since it is larger than the sum of its proper divisors (1).

13343731 is an equidigital number, since it uses as much as digits as its factorization.

13343731 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2268, while the sum is 25.

The square root of 13343731 is about 3652.9071983832. The cubic root of 13343731 is about 237.1878432686.

The spelling of 13343731 in words is "thirteen million, three hundred forty-three thousand, seven hundred thirty-one".