21030313014 has 56 divisors (see below), whose sum is σ = 48822368832. Its totient is φ = 6783957360.

The previous prime is 21030313009. The next prime is 21030313033. The reversal of 21030313014 is 41031303012.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 187449 + ... + 277844.

Almost surely, 2^21030313014 is an apocalyptic number.

21030313014 is an abundant number, since it is smaller than the sum of its proper divisors (27792055818).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21030313014 is an equidigital number, since it uses as much as digits as its factorization.

21030313014 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 465344 (or 465329 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 21030313014 its reverse (41031303012), we get a palindrome (62061616026).

The spelling of 21030313014 in words is "twenty-one billion, thirty million, three hundred thirteen thousand, fourteen".