21124403301431 has 8 divisors (see below), whose sum is σ = 21384110333040. Its totient is φ = 20865551977728.

The previous prime is 21124403301403. The next prime is 21124403301433. The reversal of 21124403301431 is 13410330442112.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21124403301431 is a prime.

It is a super-2 number, since 2×21124403301431² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21124403301394 and 21124403301403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21124403301433) 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, 213877301 + ... + 213976046.

It is an arithmetic number, because the mean of its divisors is an integer number (2673013791630).

Almost surely, 2^{21124403301431} is an apocalyptic number.

21124403301431 is a deficient number, since it is larger than the sum of its proper divisors (259707031609).

21124403301431 is an equidigital number, since it uses as much as digits as its factorization.

21124403301431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427853953.

The product of its (nonzero) digits is 6912, while the sum is 29.

Adding to 21124403301431 its reverse (13410330442112), we get a palindrome (34534733743543).

The spelling of 21124403301431 in words is "twenty-one trillion, one hundred twenty-four billion, four hundred three million, three hundred one thousand, four hundred thirty-one".