21454531331303 has 16 divisors (see below), whose sum is σ = 25192032849984. Its totient is φ = 17887833815040.

The previous prime is 21454531331249. The next prime is 21454531331309. The reversal of 21454531331303 is 30313313545412.

It is not a de Polignac number, because 21454531331303 - 2¹⁴ = 21454531314919 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21454531331309) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 110814950 + ... + 111008387.

It is an arithmetic number, because the mean of its divisors is an integer number (1574502053124).

Almost surely, 2^{21454531331303} is an apocalyptic number.

21454531331303 is a deficient number, since it is larger than the sum of its proper divisors (3737501518681).

21454531331303 is a wasteful number, since it uses less digits than its factorization.

21454531331303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221823722.

The product of its (nonzero) digits is 194400, while the sum is 38.

Adding to 21454531331303 its reverse (30313313545412), we get a palindrome (51767844876715).

The spelling of 21454531331303 in words is "twenty-one trillion, four hundred fifty-four billion, five hundred thirty-one million, three hundred thirty-one thousand, three hundred three".