21310212003131 has 8 divisors (see below), whose sum is σ = 21378785101824. Its totient is φ = 21241647385920.

The previous prime is 21310212003127. The next prime is 21310212003253. The reversal of 21310212003131 is 13130021201312.

It is a happy number.

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 21310212003131 - 2² = 21310212003127 is a prime.

It is a super-2 number, since 2×21310212003131² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21310212003331) 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, 2932166 + ... + 7156676.

It is an arithmetic number, because the mean of its divisors is an integer number (2672348137728).

Almost surely, 2^{21310212003131} is an apocalyptic number.

21310212003131 is a deficient number, since it is larger than the sum of its proper divisors (68573098693).

21310212003131 is a wasteful number, since it uses less digits than its factorization.

21310212003131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4240741.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 21310212003131 its reverse (13130021201312), we get a palindrome (34440233204443).

The spelling of 21310212003131 in words is "twenty-one trillion, three hundred ten billion, two hundred twelve million, three thousand, one hundred thirty-one".