13403347021 has 8 divisors (see below), whose sum is σ = 13558132224. Its totient is φ = 13249449360.

The previous prime is 13403347003. The next prime is 13403347057. The reversal of 13403347021 is 12074330431.

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 13403347021 - 2⁷ = 13403346893 is a prime.

It is a super-2 number, since 2×13403347021² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13403347081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 191485 + ... + 251938.

It is an arithmetic number, because the mean of its divisors is an integer number (1694766528).

Almost surely, 2^13403347021 is an apocalyptic number.

It is an amenable number.

13403347021 is a deficient number, since it is larger than the sum of its proper divisors (154785203).

13403347021 is a wasteful number, since it uses less digits than its factorization.

13403347021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 443771.

The product of its (nonzero) digits is 6048, while the sum is 28.

Adding to 13403347021 its reverse (12074330431), we get a palindrome (25477677452).

The spelling of 13403347021 in words is "thirteen billion, four hundred three million, three hundred forty-seven thousand, twenty-one".