21434343032 has 8 divisors (see below), whose sum is σ = 40189393200. Its totient is φ = 10717171512.

The previous prime is 21434343017. The next prime is 21434343043. The reversal of 21434343032 is 23034343412.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×21434343032² (a number of 21 digits) contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 21434342986 and 21434343004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1339646432 + ... + 1339646447.

It is an arithmetic number, because the mean of its divisors is an integer number (5023674150).

Almost surely, 2^21434343032 is an apocalyptic number.

It is an amenable number.

21434343032 is a deficient number, since it is larger than the sum of its proper divisors (18755050168).

21434343032 is a wasteful number, since it uses less digits than its factorization.

21434343032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2679292885 (or 2679292881 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 29.

Adding to 21434343032 its reverse (23034343412), we get a palindrome (44468686444).

The spelling of 21434343032 in words is "twenty-one billion, four hundred thirty-four million, three hundred forty-three thousand, thirty-two".