13431001 has 4 divisors (see below), whose sum is σ = 13439952. Its totient is φ = 13422052.

The previous prime is 13430993. The next prime is 13431017. The reversal of 13431001 is 10013431.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 13431001 - 2³ = 13430993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13435001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1615 + ... + 5428.

It is an arithmetic number, because the mean of its divisors is an integer number (3359988).

Almost surely, 2^13431001 is an apocalyptic number.

It is an amenable number.

13431001 is a deficient number, since it is larger than the sum of its proper divisors (8951).

13431001 is an equidigital number, since it uses as much as digits as its factorization.

13431001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8950.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 13431001 is about 3664.8330112026. The cubic root of 13431001 is about 237.7038014276.

Adding to 13431001 its reverse (10013431), we get a palindrome (23444432).

The spelling of 13431001 in words is "thirteen million, four hundred thirty-one thousand, one".