21400200431 has 8 divisors (see below), whose sum is σ = 22560859104. Its totient is φ = 20258726400.

The previous prime is 21400200401. The next prime is 21400200433. The reversal of 21400200431 is 13400200412.

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 21400200431 - 2¹⁰ = 21400199407 is a prime.

It is a super-2 number, since 2×21400200431² (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 (21400200433) 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, 4793870 + ... + 4798331.

It is an arithmetic number, because the mean of its divisors is an integer number (2820107388).

Almost surely, 2^21400200431 is an apocalyptic number.

21400200431 is a deficient number, since it is larger than the sum of its proper divisors (1160658673).

21400200431 is an equidigital number, since it uses as much as digits as its factorization.

21400200431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9592321.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 21400200431 its reverse (13400200412), we get a palindrome (34800400843).

The spelling of 21400200431 in words is "twenty-one billion, four hundred million, two hundred thousand, four hundred thirty-one".