13431021001 has 4 divisors (see below), whose sum is σ = 13433951104. Its totient is φ = 13428090900.

The previous prime is 13431020989. The next prime is 13431021013. The reversal of 13431021001 is 10012013431.

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 an emirpimes, since its reverse is a distinct semiprime: 10012013431 = 7 ⋅1430287633.

It is an interprime number because it is at equal distance from previous prime (13431020989) and next prime (13431021013).

It is a cyclic number.

It is not a de Polignac number, because 13431021001 - 2²⁵ = 13397466569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13431021101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1458165 + ... + 1467346.

It is an arithmetic number, because the mean of its divisors is an integer number (3358487776).

Almost surely, 2^13431021001 is an apocalyptic number.

It is an amenable number.

13431021001 is a deficient number, since it is larger than the sum of its proper divisors (2930103).

13431021001 is an equidigital number, since it uses as much as digits as its factorization.

13431021001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2930102.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 13431021001 its reverse (10012013431), we get a palindrome (23443034432).

The spelling of 13431021001 in words is "thirteen billion, four hundred thirty-one million, twenty-one thousand, one".