20311133133 has 32 divisors (see below), whose sum is σ = 29687132160. Its totient is φ = 12304293120.

The previous prime is 20311133107. The next prime is 20311133149. The reversal of 20311133133 is 33133111302.

It is not a de Polignac number, because 20311133133 - 2⁶ = 20311133069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20311133233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 148810 + ... + 250532.

It is an arithmetic number, because the mean of its divisors is an integer number (927722880).

Almost surely, 2^20311133133 is an apocalyptic number.

It is an amenable number.

20311133133 is a deficient number, since it is larger than the sum of its proper divisors (9375999027).

20311133133 is a wasteful number, since it uses less digits than its factorization.

20311133133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101889.

The product of its (nonzero) digits is 486, while the sum is 21.

Adding to 20311133133 its reverse (33133111302), we get a palindrome (53444244435).

The spelling of 20311133133 in words is "twenty billion, three hundred eleven million, one hundred thirty-three thousand, one hundred thirty-three".