20312210061 has 24 divisors (see below), whose sum is σ = 34469207136. Its totient is φ = 11363473440.

The previous prime is 20312209999. The next prime is 20312210063. The reversal of 20312210061 is 16001221302.

It is not a de Polignac number, because 20312210061 - 2¹³ = 20312201869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20312210063) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7890015 + ... + 7892588.

It is an arithmetic number, because the mean of its divisors is an integer number (1436216964).

Almost surely, 2^20312210061 is an apocalyptic number.

It is an amenable number.

20312210061 is a deficient number, since it is larger than the sum of its proper divisors (14156997075).

20312210061 is a wasteful number, since it uses less digits than its factorization.

20312210061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15782633 (or 15782630 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 20312210061 its reverse (16001221302), we get a palindrome (36313431363).

The spelling of 20312210061 in words is "twenty billion, three hundred twelve million, two hundred ten thousand, sixty-one".