21032143403 has 8 divisors (see below), whose sum is σ = 21210072576. Its totient is φ = 20854477800.

The previous prime is 21032143399. The next prime is 21032143417. The reversal of 21032143403 is 30434123012.

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 21032143403 - 2² = 21032143399 is a prime.

It is a super-2 number, since 2×21032143403² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21032143603) 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 7 ways as a sum of consecutive naturals, for example, 96050 + ... + 226472.

It is an arithmetic number, because the mean of its divisors is an integer number (2651259072).

Almost surely, 2^21032143403 is an apocalyptic number.

21032143403 is a deficient number, since it is larger than the sum of its proper divisors (177929173).

21032143403 is a wasteful number, since it uses less digits than its factorization.

21032143403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131785.

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

Adding to 21032143403 its reverse (30434123012), we get a palindrome (51466266415).

The spelling of 21032143403 in words is "twenty-one billion, thirty-two million, one hundred forty-three thousand, four hundred three".