21413531203 has 8 divisors (see below), whose sum is σ = 21693977280. Its totient is φ = 21133320000.

The previous prime is 21413531173. The next prime is 21413531207. The reversal of 21413531203 is 30213531412.

It is a happy number.

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 21413531203 - 2¹³ = 21413523011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21413531207) 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, 128703 + ... + 243703.

It is an arithmetic number, because the mean of its divisors is an integer number (2711747160).

Almost surely, 2^21413531203 is an apocalyptic number.

21413531203 is a deficient number, since it is larger than the sum of its proper divisors (280446077).

21413531203 is a wasteful number, since it uses less digits than its factorization.

21413531203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117437.

The product of its (nonzero) digits is 2160, while the sum is 25.

The spelling of 21413531203 in words is "twenty-one billion, four hundred thirteen million, five hundred thirty-one thousand, two hundred three".