133511121031 has 4 divisors (see below), whose sum is σ = 133511858200. Its totient is φ = 133510383864.

The previous prime is 133511121017. The next prime is 133511121047. The reversal of 133511121031 is 130121115331.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 133511121031 - 2⁷ = 133511120903 is a prime.

It is a super-2 number, since 2×133511121031² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 133511120993 and 133511121011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133511121061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111685 + ... + 528673.

It is an arithmetic number, because the mean of its divisors is an integer number (33377964550).

Almost surely, 2^133511121031 is an apocalyptic number.

133511121031 is a deficient number, since it is larger than the sum of its proper divisors (737169).

133511121031 is an equidigital number, since it uses as much as digits as its factorization.

133511121031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 737168.

The product of its (nonzero) digits is 270, while the sum is 22.

Adding to 133511121031 its reverse (130121115331), we get a palindrome (263632236362).

The spelling of 133511121031 in words is "one hundred thirty-three billion, five hundred eleven million, one hundred twenty-one thousand, thirty-one".