133231131011 has 16 divisors (see below), whose sum is σ = 145550871648. Its totient is φ = 120946176000.

The previous prime is 133231130909. The next prime is 133231131041. The reversal of 133231131011 is 110131132331.

It is a cyclic number.

It is not a de Polignac number, because 133231131011 - 2³⁴ = 116051261827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133231131041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38537795 + ... + 38541251.

It is an arithmetic number, because the mean of its divisors is an integer number (9096929478).

Almost surely, 2^133231131011 is an apocalyptic number.

133231131011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

133231131011 is a deficient number, since it is larger than the sum of its proper divisors (12319740637).

133231131011 is a wasteful number, since it uses less digits than its factorization.

133231131011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7462.

The product of its (nonzero) digits is 162, while the sum is 20.

Adding to 133231131011 its reverse (110131132331), we get a palindrome (243362263342).

The spelling of 133231131011 in words is "one hundred thirty-three billion, two hundred thirty-one million, one hundred thirty-one thousand, eleven".