21031010230103 has 8 divisors (see below), whose sum is σ = 21054297932976. Its totient is φ = 21007734969600.

The previous prime is 21031010230081. The next prime is 21031010230121. The reversal of 21031010230103 is 30103201013012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21031010230103 - 2¹⁸ = 21031009967959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21031010230303) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 273863 + ... + 6491303.

It is an arithmetic number, because the mean of its divisors is an integer number (2631787241622).

Almost surely, 2^{21031010230103} is an apocalyptic number.

21031010230103 is a deficient number, since it is larger than the sum of its proper divisors (23287702873).

21031010230103 is a wasteful number, since it uses less digits than its factorization.

21031010230103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6221185.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 21031010230103 its reverse (30103201013012), we get a palindrome (51134211243115).

The spelling of 21031010230103 in words is "twenty-one trillion, thirty-one billion, ten million, two hundred thirty thousand, one hundred three".