21310152303 has 32 divisors (see below), whose sum is σ = 32379720192. Its totient is φ = 12340169600.

The previous prime is 21310152301. The next prime is 21310152313. The reversal of 21310152303 is 30325101312.

It is not a de Polignac number, because 21310152303 - 2¹ = 21310152301 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21310152303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21310152301) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 699301 + ... + 729137.

It is an arithmetic number, because the mean of its divisors is an integer number (1011866256).

Almost surely, 2^21310152303 is an apocalyptic number.

21310152303 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

21310152303 is a deficient number, since it is larger than the sum of its proper divisors (11069567889).

21310152303 is a wasteful number, since it uses less digits than its factorization.

21310152303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30815.

The product of its (nonzero) digits is 540, while the sum is 21.

Adding to 21310152303 its reverse (30325101312), we get a palindrome (51635253615).

The spelling of 21310152303 in words is "twenty-one billion, three hundred ten million, one hundred fifty-two thousand, three hundred three".