21142400311 has 8 divisors (see below), whose sum is σ = 21352693760. Its totient is φ = 20932791768.

The previous prime is 21142400299. The next prime is 21142400327. The reversal of 21142400311 is 11300424112.

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

It is a cyclic number.

It is not a de Polignac number, because 21142400311 - 2⁹ = 21142399799 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21142400011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109071 + ... + 232768.

It is an arithmetic number, because the mean of its divisors is an integer number (2669086720).

Almost surely, 2^21142400311 is an apocalyptic number.

21142400311 is a deficient number, since it is larger than the sum of its proper divisors (210293449).

21142400311 is a wasteful number, since it uses less digits than its factorization.

21142400311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342453.

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

Adding to 21142400311 its reverse (11300424112), we get a palindrome (32442824423).

The spelling of 21142400311 in words is "twenty-one billion, one hundred forty-two million, four hundred thousand, three hundred eleven".