13286731 has 2 divisors, whose sum is σ = 13286732. Its totient is φ = 13286730.

The previous prime is 13286701. The next prime is 13286743. The reversal of 13286731 is 13768231.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13286731 - 2²¹ = 11189579 is a prime.

It is a super-2 number, since 2×13286731² = 353074441332722, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 13286693 and 13286702.

It is not a weakly prime, because it can be changed into another prime (13286701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6643365 + 6643366.

It is an arithmetic number, because the mean of its divisors is an integer number (6643366).

Almost surely, 2^13286731 is an apocalyptic number.

13286731 is a deficient number, since it is larger than the sum of its proper divisors (1).

13286731 is an equidigital number, since it uses as much as digits as its factorization.

13286731 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6048, while the sum is 31.

The square root of 13286731 is about 3645.0968437066. The cubic root of 13286731 is about 236.8496319280.

The spelling of 13286731 in words is "thirteen million, two hundred eighty-six thousand, seven hundred thirty-one".