13313943 has 8 divisors (see below), whose sum is σ = 19724400. Its totient is φ = 8875944.

The previous prime is 13313939. The next prime is 13313977. The reversal of 13313943 is 34931331.

It is not a de Polignac number, because 13313943 - 2² = 13313939 is a prime.

It is a super-2 number, since 2×13313943² = 354522156414498, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 493109 = 13313943 / (1 + 3 + 3 + 1 + 3 + 9 + 4 + 3).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13313933) 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, 246528 + ... + 246581.

It is an arithmetic number, because the mean of its divisors is an integer number (2465550).

Almost surely, 2^13313943 is an apocalyptic number.

13313943 is a deficient number, since it is larger than the sum of its proper divisors (6410457).

13313943 is an equidigital number, since it uses as much as digits as its factorization.

13313943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493118 (or 493112 counting only the distinct ones).

The product of its digits is 2916, while the sum is 27.

The square root of 13313943 is about 3648.8276199349. The cubic root of 13313943 is about 237.0112156205.

The spelling of 13313943 in words is "thirteen million, three hundred thirteen thousand, nine hundred forty-three".