21143023034 has 48 divisors (see below), whose sum is σ = 38860365600. Its totient is φ = 8578586016.

The previous prime is 21143023021. The next prime is 21143023043. The reversal of 21143023034 is 43032034112.

It is a super-3 number, since 3×21143023034³ (a number of 32 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3726752 + ... + 3732420.

It is an arithmetic number, because the mean of its divisors is an integer number (809590950).

Almost surely, 2^21143023034 is an apocalyptic number.

21143023034 is a deficient number, since it is larger than the sum of its proper divisors (17717342566).

21143023034 is a wasteful number, since it uses less digits than its factorization.

21143023034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7707 (or 7700 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 21143023034 its reverse (43032034112), we get a palindrome (64175057146).

The spelling of 21143023034 in words is "twenty-one billion, one hundred forty-three million, twenty-three thousand, thirty-four".