20310002213 has 4 divisors (see below), whose sum is σ = 20376158880. Its totient is φ = 20243845548.

The previous prime is 20310002137. The next prime is 20310002227. The reversal of 20310002213 is 31220001302.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20310002213 - 2¹² = 20309998117 is a prime.

It is a super-3 number, since 3×20310002213³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20310002243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33077873 + ... + 33078486.

It is an arithmetic number, because the mean of its divisors is an integer number (5094039720).

Almost surely, 2^20310002213 is an apocalyptic number.

It is an amenable number.

20310002213 is a deficient number, since it is larger than the sum of its proper divisors (66156667).

20310002213 is an equidigital number, since it uses as much as digits as its factorization.

20310002213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66156666.

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 20310002213 its reverse (31220001302), we get a palindrome (51530003515).

The spelling of 20310002213 in words is "twenty billion, three hundred ten million, two thousand, two hundred thirteen".