21310031202010 has 32 divisors (see below), whose sum is σ = 38481692906880. Its totient is φ = 8496558379968.

The previous prime is 21310031202007. The next prime is 21310031202029. The reversal of 21310031202010 is 1020213001312.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6937509 + ... + 9526231.

It is an arithmetic number, because the mean of its divisors is an integer number (1202552903340).

Almost surely, 2^{21310031202010} is an apocalyptic number.

21310031202010 is a deficient number, since it is larger than the sum of its proper divisors (17171661704870).

21310031202010 is a wasteful number, since it uses less digits than its factorization.

21310031202010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2591382.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 21310031202010 its reverse (1020213001312), we get a palindrome (22330244203322).

The spelling of 21310031202010 in words is "twenty-one trillion, three hundred ten billion, thirty-one million, two hundred two thousand, ten".