131323020811 has 8 divisors (see below), whose sum is σ = 137039769504. Its totient is φ = 125606859840.

The previous prime is 131323020799. The next prime is 131323020931. The reversal of 131323020811 is 118020323131.

It is a happy number.

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 131323020811 - 2²⁹ = 130786149899 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131323029811) 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 7 ways as a sum of consecutive naturals, for example, 344725 + ... + 617641.

It is an arithmetic number, because the mean of its divisors is an integer number (17129971188).

Almost surely, 2^131323020811 is an apocalyptic number.

131323020811 is a deficient number, since it is larger than the sum of its proper divisors (5716748693).

131323020811 is a wasteful number, since it uses less digits than its factorization.

131323020811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293861.

The product of its (nonzero) digits is 864, while the sum is 25.

Adding to 131323020811 its reverse (118020323131), we get a palindrome (249343343942).

The spelling of 131323020811 in words is "one hundred thirty-one billion, three hundred twenty-three million, twenty thousand, eight hundred eleven".