21344034001431 has 8 divisors (see below), whose sum is σ = 28459150580224. Its totient is φ = 14229136711800.

The previous prime is 21344034001387. The next prime is 21344034001439. The reversal of 21344034001431 is 13410043044312.

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

It is not a de Polignac number, because 21344034001431 - 2¹⁰ = 21344034000407 is a prime.

It is a super-2 number, since 2×21344034001431² (a number of 27 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 (21344034001439) 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, 54595045 + ... + 54984606.

It is an arithmetic number, because the mean of its divisors is an integer number (3557393822528).

Almost surely, 2^{21344034001431} is an apocalyptic number.

21344034001431 is a deficient number, since it is larger than the sum of its proper divisors (7115116578793).

21344034001431 is a wasteful number, since it uses less digits than its factorization.

21344034001431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109644581.

The product of its (nonzero) digits is 13824, while the sum is 30.

Adding to 21344034001431 its reverse (13410043044312), we get a palindrome (34754077045743).

The spelling of 21344034001431 in words is "twenty-one trillion, three hundred forty-four billion, thirty-four million, one thousand, four hundred thirty-one".