133131001111 has 4 divisors (see below), whose sum is σ = 133166011752. Its totient is φ = 133095990472.

The previous prime is 133131001063. The next prime is 133131001121. The reversal of 133131001111 is 111100131331.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 133131001111 - 2²⁹ = 132594130199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133131001121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17499616 + ... + 17507221.

It is an arithmetic number, because the mean of its divisors is an integer number (33291502938).

Almost surely, 2^133131001111 is an apocalyptic number.

133131001111 is a deficient number, since it is larger than the sum of its proper divisors (35010641).

133131001111 is an equidigital number, since it uses as much as digits as its factorization.

133131001111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35010640.

The product of its (nonzero) digits is 27, while the sum is 16.

Adding to 133131001111 its reverse (111100131331), we get a palindrome (244231132442).

The spelling of 133131001111 in words is "one hundred thirty-three billion, one hundred thirty-one million, one thousand, one hundred eleven".