21431410404 has 24 divisors (see below), whose sum is σ = 50639621760. Its totient is φ = 7053375264.

The previous prime is 21431410397. The next prime is 21431410409. The reversal of 21431410404 is 40401413412.

It is not an unprimeable number, because it can be changed into a prime (21431410409) 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, 11302539 + ... + 11304434.

It is an arithmetic number, because the mean of its divisors is an integer number (2109984240).

Almost surely, 2^21431410404 is an apocalyptic number.

It is an amenable number.

21431410404 is an abundant number, since it is smaller than the sum of its proper divisors (29208211356).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21431410404 is a wasteful number, since it uses less digits than its factorization.

21431410404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22607059 (or 22607057 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 21431410404 its reverse (40401413412), we get a palindrome (61832823816).

The spelling of 21431410404 in words is "twenty-one billion, four hundred thirty-one million, four hundred ten thousand, four hundred four".