21431410102 has 8 divisors (see below), whose sum is σ = 32149045656. Its totient is φ = 10715061552.

The previous prime is 21431410093. The next prime is 21431410109. The reversal of 21431410102 is 20101413412.

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

It is a self number, because there is not a number n which added to its sum of digits gives 21431410102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21431410109) 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, 278983 + ... + 347410.

It is an arithmetic number, because the mean of its divisors is an integer number (4018630707).

Almost surely, 2^21431410102 is an apocalyptic number.

21431410102 is a deficient number, since it is larger than the sum of its proper divisors (10717635554).

21431410102 is a wasteful number, since it uses less digits than its factorization.

21431410102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 643502.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 21431410102 its reverse (20101413412), we get a palindrome (41532823514).

The spelling of 21431410102 in words is "twenty-one billion, four hundred thirty-one million, four hundred ten thousand, one hundred two".