20102031101 has 2 divisors, whose sum is σ = 20102031102. Its totient is φ = 20102031100.

The previous prime is 20102031091. The next prime is 20102031109. The reversal of 20102031101 is 10113020102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12594675076 + 7507356025 = 112226^2 + 86645^2 .

It is a cyclic number.

It is not a de Polignac number, because 20102031101 - 2¹⁴ = 20102014717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20102031109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10051015550 + 10051015551.

It is an arithmetic number, because the mean of its divisors is an integer number (10051015551).

Almost surely, 2^20102031101 is an apocalyptic number.

It is an amenable number.

20102031101 is a deficient number, since it is larger than the sum of its proper divisors (1).

20102031101 is an equidigital number, since it uses as much as digits as its factorization.

20102031101 is an evil number, because the sum of its binary digits is even.

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

Adding to 20102031101 its reverse (10113020102), we get a palindrome (30215051203).

The spelling of 20102031101 in words is "twenty billion, one hundred two million, thirty-one thousand, one hundred one".