20131033551135 has 32 divisors (see below), whose sum is σ = 35077064541120. Its totient is φ = 9799306902528.

The previous prime is 20131033551133. The next prime is 20131033551137. The reversal of 20131033551135 is 53115533013102.

It is an interprime number because it is at equal distance from previous prime (20131033551133) and next prime (20131033551137).

It is not a de Polignac number, because 20131033551135 - 2¹ = 20131033551133 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20131033551096 and 20131033551105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20131033551133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 579960564 + ... + 579995273.

It is an arithmetic number, because the mean of its divisors is an integer number (1096158266910).

Almost surely, 2^{20131033551135} is an apocalyptic number.

20131033551135 is a deficient number, since it is larger than the sum of its proper divisors (14946030989985).

20131033551135 is a wasteful number, since it uses less digits than its factorization.

20131033551135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1159955947.

The product of its (nonzero) digits is 20250, while the sum is 33.

Adding to 20131033551135 its reverse (53115533013102), we get a palindrome (73246566564237).

The spelling of 20131033551135 in words is "twenty trillion, one hundred thirty-one billion, thirty-three million, five hundred fifty-one thousand, one hundred thirty-five".