21303423141 has 128 divisors (see below), whose sum is σ = 39550156800. Its totient is φ = 9842549760.

The previous prime is 21303423131. The next prime is 21303423149. The reversal of 21303423141 is 14132430312.

It is a happy number.

It is not a de Polignac number, because 21303423141 - 2⁵ = 21303423109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21303423149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 12110220 + ... + 12111978.

It is an arithmetic number, because the mean of its divisors is an integer number (308985600).

Almost surely, 2^21303423141 is an apocalyptic number.

21303423141 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

21303423141 is a deficient number, since it is larger than the sum of its proper divisors (18246733659).

21303423141 is a wasteful number, since it uses less digits than its factorization.

21303423141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1939.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 21303423141 its reverse (14132430312), we get a palindrome (35435853453).

It can be divided in two parts, 21303 and 423141, that added together give a palindrome (444444).

The spelling of 21303423141 in words is "twenty-one billion, three hundred three million, four hundred twenty-three thousand, one hundred forty-one".