21431413310 has 8 divisors (see below), whose sum is σ = 38576543976. Its totient is φ = 8572565320.

The previous prime is 21431413301. The next prime is 21431413313. The reversal of 21431413310 is 1331413412.

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

It is a super-2 number, since 2×21431413310² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21431413313) 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, 1071570656 + ... + 1071570675.

It is an arithmetic number, because the mean of its divisors is an integer number (4822067997).

Almost surely, 2^21431413310 is an apocalyptic number.

21431413310 is a deficient number, since it is larger than the sum of its proper divisors (17145130666).

21431413310 is a wasteful number, since it uses less digits than its factorization.

21431413310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2143141338.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 21431413310 its reverse (1331413412), we get a palindrome (22762826722).

The spelling of 21431413310 in words is "twenty-one billion, four hundred thirty-one million, four hundred thirteen thousand, three hundred ten".