21103031302 has 32 divisors (see below), whose sum is σ = 34289671680. Its totient is φ = 9708697440.

The previous prime is 21103031293. The next prime is 21103031329. The reversal of 21103031302 is 20313030112.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 188868 + ... + 279064.

It is an arithmetic number, because the mean of its divisors is an integer number (1071552240).

Almost surely, 2^21103031302 is an apocalyptic number.

21103031302 is a deficient number, since it is larger than the sum of its proper divisors (13186640378).

21103031302 is a wasteful number, since it uses less digits than its factorization.

21103031302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90396.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 21103031302 its reverse (20313030112), we get a palindrome (41416061414).

The spelling of 21103031302 in words is "twenty-one billion, one hundred three million, thirty-one thousand, three hundred two".