20100102311 has 4 divisors (see below), whose sum is σ = 20112690072. Its totient is φ = 20087514552.

The previous prime is 20100102271. The next prime is 20100102317. The reversal of 20100102311 is 11320100102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20100102311 - 2¹⁴ = 20100085927 is a prime.

It is a super-2 number, since 2×20100102311² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20100102292 and 20100102301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20100102317) 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, 6291485 + ... + 6294678.

It is an arithmetic number, because the mean of its divisors is an integer number (5028172518).

Almost surely, 2^20100102311 is an apocalyptic number.

20100102311 is a deficient number, since it is larger than the sum of its proper divisors (12587761).

20100102311 is a wasteful number, since it uses less digits than its factorization.

20100102311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12587760.

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 20100102311 its reverse (11320100102), we get a palindrome (31420202413).

The spelling of 20100102311 in words is "twenty billion, one hundred million, one hundred two thousand, three hundred eleven".