131533256811 has 8 divisors (see below), whose sum is σ = 191321100864. Its totient is φ = 79717125320.

The previous prime is 131533256693. The next prime is 131533256837. The reversal of 131533256811 is 118652335131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 131533256811 - 2⁷ = 131533256683 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 131533256811.

It is not an unprimeable number, because it can be changed into a prime (131533256861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1992928101 + ... + 1992928166.

It is an arithmetic number, because the mean of its divisors is an integer number (23915137608).

Almost surely, 2^131533256811 is an apocalyptic number.

131533256811 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

131533256811 is a deficient number, since it is larger than the sum of its proper divisors (59787844053).

131533256811 is a wasteful number, since it uses less digits than its factorization.

131533256811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3985856281.

The product of its digits is 64800, while the sum is 39.

The spelling of 131533256811 in words is "one hundred thirty-one billion, five hundred thirty-three million, two hundred fifty-six thousand, eight hundred eleven".