21430320310 has 32 divisors (see below), whose sum is σ = 44098136640. Its totient is φ = 7345387392.

The previous prime is 21430320281. The next prime is 21430320341. The reversal of 21430320310 is 1302303412.

It is a super-2 number, since 2×21430320310² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 205956 + ... + 292024.

It is an arithmetic number, because the mean of its divisors is an integer number (1378066770).

Almost surely, 2^21430320310 is an apocalyptic number.

21430320310 is an abundant number, since it is smaller than the sum of its proper divisors (22667816330).

21430320310 is a wasteful number, since it uses less digits than its factorization.

21430320310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89640.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 21430320310 its reverse (1302303412), we get a palindrome (22732623722).

The spelling of 21430320310 in words is "twenty-one billion, four hundred thirty million, three hundred twenty thousand, three hundred ten".