133203031311 has 16 divisors (see below), whose sum is σ = 206303525888. Its totient is φ = 74868213600.

The previous prime is 133203031253. The next prime is 133203031363. The reversal of 133203031311 is 113130302331.

It is not a de Polignac number, because 133203031311 - 2⁷ = 133203031183 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133203032311) 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 15 ways as a sum of consecutive naturals, for example, 51990535 + ... + 51993096.

It is an arithmetic number, because the mean of its divisors is an integer number (12893970368).

Almost surely, 2^133203031311 is an apocalyptic number.

133203031311 is a deficient number, since it is larger than the sum of its proper divisors (73100494577).

133203031311 is a wasteful number, since it uses less digits than its factorization.

133203031311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103983702.

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

Adding to 133203031311 its reverse (113130302331), we get a palindrome (246333333642).

The spelling of 133203031311 in words is "one hundred thirty-three billion, two hundred three million, thirty-one thousand, three hundred eleven".