13349731 has 4 divisors (see below), whose sum is σ = 13399264. Its totient is φ = 13300200.

The previous prime is 13349701. The next prime is 13349741. The reversal of 13349731 is 13794331.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13349731 - 2¹¹ = 13347683 is a prime.

It is a super-2 number, since 2×13349731² = 356430635544722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13349693 and 13349702.

It is not an unprimeable number, because it can be changed into a prime (13349701) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24360 + ... + 24901.

It is an arithmetic number, because the mean of its divisors is an integer number (3349816).

Almost surely, 2^13349731 is an apocalyptic number.

13349731 is a deficient number, since it is larger than the sum of its proper divisors (49533).

13349731 is an equidigital number, since it uses as much as digits as its factorization.

13349731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49532.

The product of its digits is 6804, while the sum is 31.

The square root of 13349731 is about 3653.7283697615. The cubic root of 13349731 is about 237.2233883949.

The spelling of 13349731 in words is "thirteen million, three hundred forty-nine thousand, seven hundred thirty-one".