20131133101 has 4 divisors (see below), whose sum is σ = 20133317052. Its totient is φ = 20128949152.

The previous prime is 20131133089. The next prime is 20131133119. The reversal of 20131133101 is 10133113102.

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

It can be written as a sum of positive squares in 2 ways, for example, as 9945075625 + 10186057476 = 99725^2 + 100926^2 .

It is a cyclic number.

It is not a de Polignac number, because 20131133101 - 2³³ = 11541198509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20131133161) 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, 1078090 + ... + 1096603.

It is an arithmetic number, because the mean of its divisors is an integer number (5033329263).

Almost surely, 2^20131133101 is an apocalyptic number.

It is an amenable number.

20131133101 is a deficient number, since it is larger than the sum of its proper divisors (2183951).

20131133101 is an equidigital number, since it uses as much as digits as its factorization.

20131133101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2183950.

The product of its (nonzero) digits is 54, while the sum is 16.

Adding to 20131133101 its reverse (10133113102), we get a palindrome (30264246203).

The spelling of 20131133101 in words is "twenty billion, one hundred thirty-one million, one hundred thirty-three thousand, one hundred one".