13343309731 has 8 divisors (see below), whose sum is σ = 13466206224. Its totient is φ = 13220497920.

The previous prime is 13343309717. The next prime is 13343309743. The reversal of 13343309731 is 13790334331.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13343309731 is a prime.

It is a super-2 number, since 2×13343309731² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13343309431) 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, 320635 + ... + 359851.

It is an arithmetic number, because the mean of its divisors is an integer number (1683275778).

Almost surely, 2^13343309731 is an apocalyptic number.

13343309731 is a deficient number, since it is larger than the sum of its proper divisors (122896493).

13343309731 is a wasteful number, since it uses less digits than its factorization.

13343309731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42341.

The product of its (nonzero) digits is 61236, while the sum is 37.

The spelling of 13343309731 in words is "thirteen billion, three hundred forty-three million, three hundred nine thousand, seven hundred thirty-one".