21310012331003 has 16 divisors (see below), whose sum is σ = 25040555108352. Its totient is φ = 17932689192000.

The previous prime is 21310012330927. The next prime is 21310012331009. The reversal of 21310012331003 is 30013321001312.

It is not a de Polignac number, because 21310012331003 - 2³⁶ = 21241292854267 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21310012331009) 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, 1358529218 + ... + 1358544903.

It is an arithmetic number, because the mean of its divisors is an integer number (1565034694272).

Almost surely, 2^{21310012331003} is an apocalyptic number.

21310012331003 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

21310012331003 is a deficient number, since it is larger than the sum of its proper divisors (3730542777349).

21310012331003 is a wasteful number, since it uses less digits than its factorization.

21310012331003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2717074186.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 21310012331003 its reverse (30013321001312), we get a palindrome (51323333332315).

The spelling of 21310012331003 in words is "twenty-one trillion, three hundred ten billion, twelve million, three hundred thirty-one thousand, three".