21320232343310 has 16 divisors (see below), whose sum is σ = 39312428419152. Its totient is φ = 8320090670400.

The previous prime is 21320232343273. The next prime is 21320232343373. The reversal of 21320232343310 is 1334323202312.

It is a happy number.

It is a super-3 number, since 3×21320232343310³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26000282936 + ... + 26000283755.

It is an arithmetic number, because the mean of its divisors is an integer number (2457026776197).

Almost surely, 2^{21320232343310} is an apocalyptic number.

21320232343310 is a deficient number, since it is larger than the sum of its proper divisors (17992196075842).

21320232343310 is a wasteful number, since it uses less digits than its factorization.

21320232343310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52000566739.

The product of its (nonzero) digits is 15552, while the sum is 29.

Adding to 21320232343310 its reverse (1334323202312), we get a palindrome (22654555545622).

The spelling of 21320232343310 in words is "twenty-one trillion, three hundred twenty billion, two hundred thirty-two million, three hundred forty-three thousand, three hundred ten".