13061731 has 2 divisors, whose sum is σ = 13061732. Its totient is φ = 13061730.

The previous prime is 13061681. The next prime is 13061743. The reversal of 13061731 is 13716031.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13061731 - 2¹⁵ = 13028963 is a prime.

It is a super-2 number, since 2×13061731² = 341217633432722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (13061761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6530865 + 6530866.

It is an arithmetic number, because the mean of its divisors is an integer number (6530866).

Almost surely, 2^13061731 is an apocalyptic number.

13061731 is a deficient number, since it is larger than the sum of its proper divisors (1).

13061731 is an equidigital number, since it uses as much as digits as its factorization.

13061731 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 378, while the sum is 22.

The square root of 13061731 is about 3614.1016864499. The cubic root of 13061731 is about 235.5050613241.

Adding to 13061731 its reverse (13716031), we get a palindrome (26777762).

The spelling of 13061731 in words is "thirteen million, sixty-one thousand, seven hundred thirty-one".