13304731 has 8 divisors (see below), whose sum is σ = 15278400. Its totient is φ = 11458440.

The previous prime is 13304729. The next prime is 13304737. The reversal of 13304731 is 13740331.

It is a happy number.

13304731 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13304731 - 2¹ = 13304729 is a prime.

It is a super-2 number, since 2×13304731² = 354031733964722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13304737) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31621 + ... + 32038.

It is an arithmetic number, because the mean of its divisors is an integer number (1909800).

Almost surely, 2^13304731 is an apocalyptic number.

13304731 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

13304731 is a deficient number, since it is larger than the sum of its proper divisors (1973669).

13304731 is a wasteful number, since it uses less digits than its factorization.

13304731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63689.

The product of its (nonzero) digits is 756, while the sum is 22.

The square root of 13304731 is about 3647.5650782406. The cubic root of 13304731 is about 236.9565398301.

Subtracting 13304731 from its reverse (13740331), we obtain a square (435600 = 660²).

The spelling of 13304731 in words is "thirteen million, three hundred four thousand, seven hundred thirty-one".