20133030131 has 4 divisors (see below), whose sum is σ = 20133422232. Its totient is φ = 20132638032.

The previous prime is 20133030119. The next prime is 20133030149. The reversal of 20133030131 is 13103033102.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20133030131 is a prime.

It is a super-2 number, since 2×20133030131² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20133038131) 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, 104906 + ... + 226431.

It is an arithmetic number, because the mean of its divisors is an integer number (5033355558).

Almost surely, 2^20133030131 is an apocalyptic number.

20133030131 is a deficient number, since it is larger than the sum of its proper divisors (392101).

20133030131 is an equidigital number, since it uses as much as digits as its factorization.

20133030131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392100.

The product of its (nonzero) digits is 162, while the sum is 17.

Adding to 20133030131 its reverse (13103033102), we get a palindrome (33236063233).

The spelling of 20133030131 in words is "twenty billion, one hundred thirty-three million, thirty thousand, one hundred thirty-one".